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David H. Byrne and Natalie Anderson

pink petals with the non-showy petals being a darker pink and smaller than the showy petals. Pollen is yellow and abundant. The tree is self-fertile. The trees are vigorous with the typical semispreading growth habit similar to ‘TexKing’, ‘TexPrince

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Yuan Zhang, Chen Wang, HongZheng Ma, and SiLan Dai

germplasm resource for chrysanthemums has been built. Currently, the number of chrysanthemum cultivars worldwide is ≈20,000 to 30,000 ( Anderson, 2006 ). In China, chrysanthemums were traditionally classified into five petal types such as flat, spoon

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Gerry Moore

propagated in 1995 and flowered in 1996. It was first sold commercially in 2009 in North Carolina by Buds & Blooms Nursery, Inc. This cultivar goes under the trademark name “Summer Snow”. It exhibits compact, semi-dwarf growth, and possesses large, double

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Zhen Shu, Yimin Shi, Hongmei Qian, Yiwei Tao, and Dongqin Tang

Senescence is an age-dependent deterioration process at the cellular, tissue, organ, or organism level, leading to death or the end of the lifespan ( Noodén, 1988 ). The wilting of flower petals is a deliberate and precisely controlled senescence

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Xiao-min Liu, Xin-zhi Zhang, Yi-min Shi, and Dong-qin Tang

’ joins the group at last for its greater differences with other cultivars. For Chinese Narcissus, three ecotypes with single petals are grouped together, then combined with Zhangzhou Narcissus ‘Yulinglong’, which possesses double petals. Fig. 4

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Oussama H. Mounzer, Wenceslao Conejero, Emilio Nicolás, Isabel Abrisqueta, Yelitza V. García-Orellana, Luis M. Tapia, Juan Vera, Jose M. Abrisqueta, and Maria del Carmen Ruiz-Sánchez

more than 50% open flowers were registered (full bloom, Stage F) and after accumulating an average of 6,244 GDH or 329 GDD ( Table 2 ). A few days later, fruit set took place and the petals started to fade and fall (Stage G) leaving a green ovary

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G.A. Picchioni, Wayne A. Mackay, and Mario Valenzuela-Vázquez

revealed an ethylene-dependent competition between gynoecium and mature petals for vase or petal-applied 14 C-sucrose. Senescing petals on the uncut daylily ( Hemerocallis × hybrida Hort.) lost over 80% of their maximum amounts of endogenous amino

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Renwei Huang, Daofeng Liu, Min Zhao, Zhineng Li, Mingyang Li, and Shunzhao Sui

heights of the plants were measured using a ruler. The flower diameters, the widths and lengths of the petals, and the thicknesses of the leaves were each measured using a vernier caliper. The lengths and widths of stomata and stomatal densities were

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Neil O. Anderson, Peter D. Ascher, Vincent Fritz, Charlie Rohwer, Steven Poppe, Shengrui Yao, Patricia Johnson, Lee Klossner, and Neal Eash

abaxial (right) leaf profiles of MN Sel’n. 90-275-27. Bar = 1 cm. Photo credit: Neil Anderson. Characteristic of the Asteraceae, the MN Sel’n. 90-275-27 double, decorative flowers are composite inflorescences with ≈100–206 ray petals (gynoecious; spatulate

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Thomas M. Gradziel, Bruce Lampinen, Joseph H. Connell, and Mario Viveros

penetration and air circulation to the canopy interior. Flowers are numerous and produce abundant pollen. Flower petals are large and white with slightly scalloped margins and develop a characteristic reddening at the petal base as bloom progresses ( Fig. 3