Search Results

You are looking at 61 - 70 of 488 items for :

  • red���purple flower x
  • Refine by Access: User-accessible Content x
Clear All
Free access

Roberto G. Lopez and Erik S. Runkle

Miltoniopsis orchids have appealing potted-plant characteristics, including large, fragrant, and showy pansylike flowers that range from white and yellow to shades of red and purple. Scheduling orchid hybrids to flower on specific dates requires knowledge of how light and temperature regulate the flowering process. We performed experiments to determine whether a 9- or 16-h photoperiod [short day (SD) or long day (LD)] before vernalization and vernalization temperatures of 8, 11, 14, 17, 20, or 23 °C under SD or LD regulate flowering of potted Miltoniopsis orchids. Flowering of Miltoniopsis Augres `Trinity' was promoted most when plants were exposed to SD and then vernalized at 11 or 14 °C. Additional experiments were performed to determine how durations of prevernalization SD and vernalization at 14 °C influenced flowering of Miltoniopsis Augres `Trinity' and Eastern Bay `Russian'. Plants were placed under SD or LD at 20 °C for 0, 4, 8, 12, or 16 weeks and then transferred to 14 °C under SD for 8 weeks. Another set of plants was placed under SD or LD at 20 °C for 8 weeks and then transferred to 14 °C with SD for 0, 3, 6, 9, or 12 weeks. After treatments, plants were grown in a common environment at 20 °C with LD. Flowering of Miltoniopsis Augres `Trinity' was most complete and uniform (≥90%) when plants were exposed to SD for 4 or 8 weeks before 8 weeks of vernalization at 14 °C. Flowering percentage of Miltoniopsis Eastern Bay `Russian' was ≥80 regardless of prevernalization photoperiod or duration. This information could be used by greenhouse growers and orchid hobbyists to more reliably induce flowering of potted Miltoniopsis orchids.

Free access

Seenivasan Natarajan* and Jeff S. Kuehny

The demand for new and/or improved herbaceous annuals and perennials continues to increase, making information on production and viability of these plants a necessity. In Louisiana and the Southern U.S., one of the greatest impediments to production of marketable herbaceous plants and their longevity is high temperature. Herbaceous plants have various stages of vegetative growth and flowering; high temperatures during these developmental stages can have a tremendous impact on plant metabolism, and thus plant growth and development. The goal of this research was to better understand the differences between heat tolerant (HT) and heat sensitive (HS) species and cultivars at various high temperatures in terms of whole plant growth, flowering, photosynthesis, carbohydrate content, electrolyte leakage, chlorophyll content and plant small heat shock proteins (HSP) expression levels. Salvia splendens Vista Series (HT), Sizzler series (HS); Viola witrokiana `Crystal Bowl Purple' (HT), `Majestic Giant Red Blotch' (HS), F1 Nature Series (HT) and F1 Iona Series (HS); Gaillardia × grandiflora `Goblin' (HT) and Coreopsis grandiflora `Early Sunrise' (HS) were grown from seed in growth chambers under 25/18 °C (day/night) cycles. Plants at 4, 6, and 8 weeks after germination were subjected to different high temperature treatments of 25 (control), 30, 35, 40, and 45 °C for 3 h. Results show that there was a significant difference in net photosynthesis, electrolyte leakage, soluble carbohydrate content and HSP levels between HT and HS cultivars. Effects of high temperature on plant growth, chlorophyll content, and number of days to flower, flower size, and marketable quality were also significantly different.

Free access

Darunee Thawornchareon, Unaroj Boonprakob, and Kriengsak Thaipong

amounts of antioxidants. The ‘KU Garnet No.1’ tree is vigorous and has a compact, upright growth habit; maroon young leaves, pink flowers, and a maroon-skin fruit with whitish purple pulp. Origin The ‘KU Garnet No.1’ guava ( Psidium guajava L.) is a

Free access

Rosanna Freyre, Zhanao Deng, and Victor A. Zayas

plant height, good performance and flowering, and no fruiting. R13-5-3 has purple flowers, R16-1-1 has red-purple flowers, and R15-24-17 has a new flower color for Ruellia , which is white corolla with red-purple throat. Origin and Ploidy Levels The

Open access

Dingmeng Hu, Jingwei Xu, Youji Han, Xingjian Dun, Lihui Wang, and Shengxiang Zhu

), and are important ornamental trees in temperate zones because of their excellent floral displays (flower type, diameter, shape, and color), colorful fruit (shades of lime green, amber, gold, yellow, orange, red, and purple), wide range of growth habits

Free access

Narathid Muakrong, Patcharin Tanya, and Peerasak Srinives

. The corolla are red–purple (RHS 57C) in both male and female flowers with 10 yellow (RHS 13B) anthers and red–purple (RHS 64D) filaments. KPS1 sets only a few fruits, being green (RHS 141C) when young and yellow (RHS 8A) when ripening; each fruit

Free access

Ryan N. Contreras, John M. Ruter, and David A. Knauft

-pollination, pollen was collected by tapping inflorescences over a petri dish and was then applied to receptive stigmas of emasculated flowers using brushes. After ripening, fruit were scored as purple, pink, or white ( Fig. 1 ), collected and counted, and then seed

Free access

Cecil T. Pounders, Hamidou F. Sakhanokho, and Leopold M. Nyochembeng

measure 2 cm in diameter. The two larger petals on male flowers are 15 × 12 mm, whereas the larger two female petals are 9 × 10 mm. All flowers are red–purple N66B with splotched white N155C pigmentation often present in the central portion of petals

Free access

Chengyan Yue and Bridget K. Behe

. For this analysis, we grouped the 12 flower colors into six categories based on a combination of color intensity and proximity on the color wheel and to simplify the analysis: BluePurple (blue and purple/violet), RedBronze (bronze/rust, orange, red

Open access

Hao Jiang, Ting Zhou, Junjun Fan, Donglin Zhang, Long Zhang, Yanyan Sun, and Wangxiang Zhang

’ (red–purple doubles), and ‘Brandywine’ (pink doubles). During the past 20 years, only two double-flower crabapple cultivars, ‘Spring Bride’ ( Spongberg, 1996 ) and ‘Jarmin’ ( Jarmin, 2003 ), were released to the market in the United States. In China