Impact of chilling accumulation and hydrogen cyanamide on floral organ development of sweet cherry in a warm region
| Autor: | Zongrang Liu, Lu Zhang, Caixi Zhang, Shiping Wang, Chao Ma, Lei Wang, Wen-ping Xu, Whiting D. Matthew |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine hydrogen cyanamide sweet cherry chilling accumulation Agriculture (General) floral organ development Plant Science Organ development Biology 01 natural sciences Biochemistry S1-972 Fruit set 03 medical and health sciences chemistry.chemical_compound Prunus Food Animals Microspore Cold winter Ovule Ecology fungi food and beverages 030104 developmental biology chemistry Agronomy warm winter region Dormancy Animal Science and Zoology Cyanamide Agronomy and Crop Science 010606 plant biology & botany Food Science |
| Zdroj: | Journal of Integrative Agriculture, Vol 15, Iss 11, Pp 2529-2538 (2016) |
| ISSN: | 2095-3119 |
| Popis: | The microscopic investigation of the floral development of sweet cherry (Prunus avium L. cv. Hongdeng) from a warm winter climate (Shanghai) and cold winter climate (Tai’an, Shandong Province, China) was conducted to explore the reason of low fruit set. The effect of hydrogen cyanamide (HCN) on floral development under warm winter conditions was also investigated. Trees grown in Shanghai with insufficient chilling accumulation exhibited little difference in the progression of microspore development compared to trees in Tai’an that accumulated adequate chilling, but showed substantial delays in ovule and embryo sac development. The growth of nucelli did not proceed beyond the macrospore mother cell and macrospore stages with abortion rates of 13, 15 and 45% by 6, 3 and 0 d before full bloom, respectively. These abnormalities in the ovule and embryo sac in the Shanghai-grown trees were eliminated by HCN application. These results suggest that chilling regulates the development of female floral organs in winter dormancy; therefore, insufficient chilling accumulation, causing abnormality of the female floral organs, restricts the cultivation of sweet cherry in warm winter regions. Interestingly, HCN application, which decreased the chilling requirements for Hongdeng, may be a potential strategy for sweet cherry cultivation in warm winter regions. |
| Databáze: | OpenAIRE |
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