Connect with us

Farm & Ranch

AgriLife Researcher develops a painter’s palette of winter-hardy hibiscus colors

Published

on

By: Kay Ledbetter

Writer: Kay Ledbetter, 806-677-5608, skledbetter@ag.tamu.edu
Contact: Dr. Dariusz Malinowski, 940-552-9941, dmalinow@ag.tamu.edu
Steve Brown, 940-552-6226, rsbrown@ag.tamu.edu

The “Blue Angel” was the first “bluish” hibiscus created by the Texas A&M AgriLife Research program in Vernon. The bluish color intensifies in shade, but in full sunlight it is purplish. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

This color is classified as salmon or light coral, and will be used in developing an orange-colored winter-hardy hibiscus. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

VERNON – Like an artist using the paint on a palette, Dr. Dariusz Malinowski is mixing pollen to create a flowering masterpiece in the form of tropically colored winter-hardy hibiscus.

Three years after the Texas A&M AgriLife Research breeding team at Vernon created the first blue-flowering winter-hardy hibiscus, they have come up with a new salmon-colored garden jewel, Malinowski said.

“In the past six years, we have disclosed to the Texas A&M University System Office of Technology and Commercialization more than 180 unique lines of winter-hardy hibiscus with very unusual flower and leaf color and shape,” he said.

With his two colleagues, Dr. William Pinchak, AgriLife Research animal nutritionist, and Steve Brown, Texas Foundation Seed Service program director, both based in Vernon, Malinowski continuously works on creating new colors in winter-hardy hibiscus.

This is a relative of the Blue Angel, where breeders decided to go the other way and create a deep purple color. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

The unique petal shape of this folly (a shade of red) colored hibiscus gives an impression of a double flower with more than the regular five petals. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

“Until a few years ago, these beautiful flowers were available only in white, pink and red,” Malinowski said. “The introduction of a purple color in the cultivar ‘Plum Crazy’ by Flemings Brothers in 1999 was an important progress in the winter-hardy hibiscus breeding.”

He said in contrast to the tropical hibiscus, its distant relative, the winter-hardy hibiscus has a very narrow genetic potential for new colors to appear in the process of selective breeding. One reason is the relatively short time breeders have been attempting to create new flower colors compared to the efforts and time put into developing new color combinations in tropical hibiscus.

The late Georgia Bost, a passionate gardener who collected numerous winter-hardy hibiscus species and developed several new cultivars on her Hibiscus Hill Plantation at Waller,  was the first to believe that extensive hybridization among available winter-hardy hibiscus species would eventually result in creation of new colors similar to those in tropical hibiscus, Malinowski said.

This unique, maroon-colored winter-hardy hibiscus was created with Texas A&M University Aggies in mind. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

The “Robert Brown” is a rare example of a chimera, where each flower on the plant has a different pattern of white speckles on the coral petals or some petals may be totally white while others will be speckled. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

“We also believe in this theory and have created to date over 8,000 hybrids among the four native species: H. coccineus, H. dasyacalyx, H. militaris and H. moscheutos, resulting not only in the most illusional blue-flowering hibiscus, but also numerous other colors, including maroon, magenta, dual-colored flowers and the newest with salmon-colored flowers,” he said.

Released to date are the Blue Angel, the first blue-flowering hibiscus cultivar, and the Robert Brown, a chimera, a hybrid where both parental genomes do not fuse completely and work independently to some extent, providing an unpredictable dual-color pattern of the flower. Blue Angel was released in memory of The Blue Angels, the U.S. Navy’s flight demonstration squadron, and Robert Brown was released in memory of Brown’s son, Robert B. Brown.

A very deep-red flower has almost black veins to create a dramatic contrast. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

An example of dual-colored flowers, this flower has intense pink color that gradually fades to almost white on the petal edges. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

 

 

 

 

 

 

 

The salmon color is the third breakthrough in their winter-hardy hibiscus breeding, after the blue and purple colors developed a few years ago, Malinowski said.

However, he said, the program has created a number of unique colors, including all shades of pink, magenta, red, crimson, purple, blue, lavender and maroon.

“Interestingly, some of our winter-hardy hibiscus hybrids started to resemble tropical hibiscuses, both with flower shapes and color combinations,” Malinowski said. “The most unusual hybrid resembles a hollyhock when in bloom.

“Our next goal is to develop yellow and orange colors in winter-hardy hibiscus, and the salmon color is the first step in the right direction,” he said. “There are two cultivars on the market with the name ‘yellow’ in them, but their flower color has nothing to do with yellow, maybe a cream color at best.”

This is a rare example of a successful effort to combine two new colors, blue and maroon, in one, dual-colored flower. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)SONY DSC

Breeding efforts concentrated on stabilizing the blue color both in full sunlight and shade resulted in this blue color, considered a novel color in winter-hardy hibiscus. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

Malinowski said the AgriLife Research breeding team expects to achieve the new colors in the next few years.

“It took us only three years to come up with the blue color, and at that time I was very skeptical if that was even possible, because blue color did not exist in winter-hardy hibiscus. I am positive we will eventually create an orange-flowering hibiscus,” he said.

The winter-hardy hibiscus breeding program at Vernon has been recognized worldwide by breeders and commercial nurseries. The flowers can basically be grown from South Central Texas to Canada, as long as the required winter period is long enough for them to go dormant after the first frost, Malinowski said. The plants resprout from the root the following spring.

“We, the hibiscus breeders, are very well organized and can share new information in a matter of minutes, thanks to the Internet,” he said. “Such an informal collaboration helps the program to be known and focus on breeding goals commonly sought by others.”

This hybrid has a tendency to produce flowers with more than five petals, this one has nine. The flower is dual-colored, with pink-reddish petals gradually fading to pink colored petal edges. (Texas A&M AgriLife Research photo by Dr. Dariusz Malinowski)

Brown said several companies are evaluating different materials for commercialization across the U.S. All of these lines are vegetatively propagated; in other words the commercial plants come from cuttings rather than seed.

“Once these companies decide they wish to include these lines in their product offering, they will license the products, and propagate to begin to increase their numbers,” he said.

Most of the very large ornamental companies have divisions dedicated to the propagation of large numbers of “liners” or small plants from cuttings, Brown said. These companies will then sell the liners to commercial nurseries that in turn will plant them in pots used for commercial sales in big box stores or retail garden centers.

This process, once a nursery makes the decision to commercialize a new product, takes about two to three years before the consumer will see the product in the garden centers in great numbers over a diverse area, he said.

-30-

 

LikeTweet

Find more stories, photos, videos and audio at http://today.agrilife.org

Continue Reading

Farm & Ranch

                                                                          American Lotus

Published

on

By

By Tony Dean

Farmers and ranchers are in a very close partnership with Mother Nature. If we really pay attention, she presents us some interesting scenarios.

For example, though they are totally different types of plants, water lilies and prickly pear have a lot in common. They both have strikingly beautiful flowers, both plants are edible, both of them are invaders into their respective habitats, and too much of either one can be an obstacle that we have to deal with.

Many north Texas ranches rely on excavated ponds for livestock water. Any time a pond contains a significant amount of shallow water so that sunlight reaches the bottom, some type of pond weed will develop.  The plant family that includes water lilies and lotuses is a common invader in our livestock water.

Water lilies and lotuses are in the same plant family but they are two separate genera. There are easy ways to tell them apart:

  • A primary difference is that water lily leaves commonly float on the surface, but lotus leaves can grow above the water line.
  • Water lily leaves and flowers are thick and waxy, while lotus leaves and flowers are thin and papery.
  • Water lily leaves have a distinct notch in the leaf, while lotus leaves are more rounded.
  • Water lily flower petals are pointed, and lotus petals are more rounded.

The photos attached to this writing are from Clay County, and this plant is common across north Texas. American lotus is adapted to a wide area, from Honduras north through Mexico and across the eastern US and into Canada.

American lotus is a perennial, and it is cold tolerant and heat tolerant. It can grow in any pond or slow moving stream that contains shallow water areas.  It prefers water with a depth of about 12 inches. Germination can occur from the large lotus seeds. Tubers, or roots, are established in the mud, and long slender stems extend upward. Leaves and flowers are both emergent in that they grow above the water line.

Lotus flowers are fragrant, and yellowish white with rich gold centers.  They open in the morning and close by late afternoon, then open again the next day.

Lotus is an edible plant and has a history as a food source. The large tuberous roots, the size of a human arm, were baked like sweet potatoes. The leaves were eaten like spinach, and the large seeds were ground into flour. Stems taste somewhat like beets and were usually peeled before being eaten.

There is a large world-wide industry of cultivating lilies and lotuses in water gardens. According to        Dr. Jerry Parsons, Professor and Extension Horticulturist with Texas A&M AgriLife Extension, cultivation of these plants dates back as early as ancient Egypt. Today, anyone with determination and a little money can have a water garden.

In 2011, the 82nd Texas Legislature designated the water lily “Texas Dawn” as the official Texas State Water Lily. Texas Dawn is a hybrid developed by Texas resident Kenneth Landon, a world-renowned expert in the field of water lilies and the director of the International Water Lily collection in San Angelo.

Ducks and other wildlife utilize the large acorn like seeds of American lotus, and submerged portions of all aquatic plants provide some form of wetland habitat. Many of us have tried to pull a bass out of a group of water lilies or lotuses, and I’m sure others have had better luck than I did. Although there can certainly be benefits to lilies, lotuses, and other aquatic plants, they can also infest ponds to the extent that the pond is not functioning correctly.

So, while the rest of the world works hard to grow these plants, ranchers sometimes need to control populations in their stock ponds. Once it gets a foot hold, American lotus can spread aggressively in wetland areas.

The primary issue that encourages American lotus, and most other water weeds, is shallow water.  Look closely at a good livestock pond and you will find that the deeper water is basically free of infestation.  Any pond will have a certain amount of shallow water that encourages water weed growth, depending upon the terrain at the pond site and how the pond was constructed. Some ranchers who enjoy and utilize wetland habitat may prefer to have ponds with significant shallow water area.

Almost all livestock ponds have a certain life expectancy.  Siltation, or movement of soil into the pond bottom through rainfall runoff, is a natural occurrence.  How fast siltation occurs into each pond, and how deep the pond was to start with, determines the length of time that the pond will contain adequate depth for dependable water for livestock.

Ponds that develop infestations of water weeds over a large percent of the surface may not have adequate depth to remain a viable water source for livestock during drought periods, especially in  western north Texas where evaporation rates are higher.

Mud, or silt, from the pond bottom, can be removed to deepen the water, but this is a very expensive process.  It is often more economical to construct a new pond rather than try to remove the silt from an old one.  Most of us do not have the funds to continually construct deep water livestock ponds, so we must try to keep existing structures functioning and providing good drinking water for livestock, for as long as we can. Control of pond weeds like American lotus may be necessary, and it can be accomplished.

There is currently no feasible biological control. American lotus can be cut and removed, but this process us usually temporary because lotus can reestablish from seeds and roots.

American lotus can be safely controlled by chemicals. This must be done carefully.  If a pond containing a large amount of any pond weeds is treated to remove all of the vegetation, a fish die-off could occur.  When the dying weeds decompose, they use up the oxygen in the water and fish can suffocate. If possible, treat only a portion of the area, wait about two weeks, and treat another portion.

Continue Reading

Farm & Ranch

Tracks in the Sand

Published

on

By

This morning, I walked out into my arena and noticed something that gave me pause. The roping steers had been in there the day before, and even though the ground was wide and level, the sand carried their story. Hoofprints crossed every direction, but in several spots, the same trail was pressed deeper than the rest. Twelve steers had been turned out, yet more than a few chose the exact same path, wearing it down until it stood out from all the other tracks.

Cattle are creatures of habit. Anyone who has spent time around them knows this. They like routine: the same feed, the same water trough, the same shade tree in the pasture. When they are turned loose, they rarely wander without purpose. More often than not, they move together, following the same course as the steer in front of them. There are reasons for this: efficiency, safety, instinct. Walking a beaten path conserves energy, and following the herd is their natural defense. Even in an arena with no real destination, those instincts come through. By the end of a short turnout, you will see the evidence, lines where they have chosen the easiest way to travel and stuck with it.

Out on the range, those lines last longer. Before fences and highways, cattle drives cut deep paths across the land. The Chisholm Trail, which carried herds north from Texas through Oklahoma into Kansas, was walked by millions of cattle in the late 1800s. More than a century later, faint traces of those trails remain, worn so deep by hooves and wagon wheels that the land still carries the mark. On ranches today, you can see the same effect in pastures where cattle walk the same lines between water and grazing. From the ground those trails might look like nothing more than dusty ruts, but from the air, they sometimes stand out as sharp lines winding through otherwise open fields. Cattle do not simply pass over the land; they shape it. Every step adds up.

That simple truth extends beyond livestock. We all make tracks. Our habits and routines are our trails, worn in by repetition, sometimes efficient, sometimes limiting. Like the cow paths, they can serve a purpose, keeping us steady and helping us move forward. But when repeated without thought, they risk becoming ruts, keeping us from stepping into new ground. History offers perspective here too. The old cattle trails built towns and economies, but once railroads and fences changed the landscape, those paths were no longer useful. Sticking to them would have meant going in circles. Progress required something new.


The Tracks We Leave

Standing in the arena, I thought about the kind of tracks I leave behind. Most of mine are not visible in the dirt. They are pressed into my daily life, how I work, the way I handle challenges, the example I set. Some are helpful and worth keeping. Others may have outlived their purpose. The difference comes in knowing when to stay in the track and when to step out of it.

Tomorrow I will drag the arena and smooth it all clean again. The next time the steers are turned in, they will make the same trails. That is their nature. But unlike them, I have a choice. I can decide which paths are worth walking, which ones to change, and what kind of tracks I want to leave for others who might follow.

Tracks tell a story. Sometimes they are only temporary, fading with the next rain. Other times they last for generations, reminders of where herds and people once walked. This morning, the cattle showed me again that even the smallest things on the ranch carry meaning. Their tracks in the arena were not just marks in the sand. They were a lesson: every step matters, and the paths we choose shape more than just the ground beneath our feet.

Continue Reading

Farm & Ranch

Leopold’s Legacy: The Five Tools That Shaped Conservation

Published

on

By

By Raenne Santos

Known as the father of wildlife management, Aldo Leopold’s teachings reshaped our understanding of conservation and our role in nature. His philosophy, rooted in ethics, ecology, and action, emerged in response to the environmental degradation of the early 20th century in the American West. Overgrazed pastures, eroding soils, and changing wildlife populations revealed the consequences of treating natural resources as limitless. 

Recognizing these challenges, Leopold theorized a transformative approach to land stewardship, emphasizing that the land is not merely a commodity, but a community in which we all belong. His works, A Sand County Almanac and Land Ethic, are still referenced to this day by modern conservationists. In Land Ethic, he introduced a practical framework for wildlife management known as the Five Tools of Wildlife Management, which offers land stewards a structured approach to maintaining and restoring ecological balance.

Symbolizing brush management, the axe is one of Leopold’s tools for controlling invasive species, shaping habitats, and mitigating wildfire risks. By selectively removing vegetation, land managers can enhance biodiversity, create open spaces for native species, and maintain healthy ecosystems. 

Representing grazing animals, the cow (when used properly) mimics the natural disturbances once provided by bison. Grazing animals promote healthy ecosystems by aiding in nutrient cycling and soil disturbance. Responsible grazing practices prevent overuse and contribute to sustainable land management. 

The plow signifies mechanical disturbance and soil preparation, crucial for habitat restoration and agricultural productivity. Used strategically, it aids in cultivating crops and creating conditions favorable to wildlife. However, misuse can lead to erosion, requiring careful application in conservation efforts.

Fire, a powerful natural tool, plays a crucial role in maintaining biodiversity and landscape resilience. Land managers use prescribed fire to control invasive species, rejuvenate plant communities, and shape habitats. Fire promotes the natural cycles of ecosystems and supports species diversity. 

The final tool, the gun, is used to manage game populations and control predators. During Leopold’s time, unregulated hunting contributed to species extinction and posed threats to others. Today, hunting is strictly managed through game laws and seasonal regulations to ensure sustainable populations.

Leopold’s Five Tools of Wildlife Management continue to influence conservation practices today. While techniques have evolved, the fundamental principles remain the same—balancing human involvement with ecological processes to sustain healthy ecosystems. His approach emphasizes the importance of working with nature rather than against it. By embracing ethical land stewardship, modern conservationists honor Leopold’s vision, ensuring that future generations inherit thriving landscapes.

Continue Reading
Ad
Ad
Ad
Ad

Trending