草业学报2011，Vol.20Issue(4)：153-158,6.
新疆不同生态区域苜蓿花粉败育情况及影响因素的细胞学研究
Pollen abortion of alfalfa in different ecological regions in Xinjiang and cytological observations of factors affecting pollen abortion
摘要
Abstract
Research on pollen abortion of alfalfa (Medicago) and cytological observation of factors affecting it was carried out for two years in four different ecological regions of alfalfa including eight observation points in Xinjiang. 1) The pollen abortion percentages differed significantly between the different ecological regions and between different alfalfa plots in the same region. In 2008, the pollen abortion percentage of different alfalfa plots were: Tacheng (20. 05±5. 33)%, (23. 41±3. 76)%, (29.80 + 5.45)%, (P<0. 05); Yili(28. 34 +3.19)%; Hutubi(15.57 ± 2.18)%, (31. 47 ± 4. 59)% , (F<0. 05); Hetian(20. 79 ± 2. 89) %, (26. 51 ±4. 74)% , (F<0. 05). 2) The alfalfa pollen abortion percentages were significantly different between different years at the same observation point. In 2007, the alfalfa pollen abortion percentage of M. Varia cv. Xinmu No. 1 and M. Sativa cv. Xinjiang Daye were (37. 96±2. 10)% and (38. 70±2. 40)% respectively in the Hutubi alfalfa seed base, and in 2008 the alfalfa pollen abortion percentages were (15. 57 ± 2. 18)% and (31. 47± 4. 59)% , (P<0. 01). 3) At the group level, pollen abortion percentages did not show significant differences at different stages of anthesis, but did have a significant differences between single flowers distributed on the same alfalfa plant, but with no obvious location or time effect. 4) From the cytological characteristics of pollen development, there was no significant limiting factor affecting pollen abortion during pollen development. The fluctuatation of the tapetum degradation period was influenced by environmental factors leading to differences of pollen abortion of the same alfalfa variety between different ecologic region and years.关键词
苜蓿/花粉败育率/绒毡层/环境因素Key words
alfalfa (Medicago)/ pollen abortion percentage/ tapetum/ environmental factor分类
农业科技引用本文复制引用
何爽,张爱勤,夏荣,李晓晔,朱红娟..新疆不同生态区域苜蓿花粉败育情况及影响因素的细胞学研究[J].草业学报,2011,20(4):153-158,6.基金项目
国家自然科学基金(30760176),新疆大学校级科研项目(BS060106)和新疆大学本科实训项目资助. （30760176）
