摘要
为揭示杭州地区甜樱桃坐果率低的原因,以每年均有一定坐果率但不稳定、低温需冷量不同的3个代表性4年生甜樱桃品种为试验材料,研究对比同一甜樱桃品种分别在杭州和泰安两地区雌雄配子体的发育状况、花器官发育质量及花粉质量。结果表明:杭州地区甜樱桃雄配子体在发育过程中有较高比例的空花粉囊,造成花粉量较少,其发育过程中的退化、降解以及多种发育异常类型造成后期雄配子体的败育;雌配子体发育成有胚珠无胚囊类型的比例较高,造成雌配子体的败育;杭州地区甜樱桃花粉质量低于泰安地区。说明杭州地区甜樱桃花器官发育质量较差,雌雄配子体发育过程中的异常导致其败育,是杭州地区甜樱桃坐果率低的重要原因。
In order to reveal the reasons for the low fruit setting rate of sweet cherry in Hangzhou area,taking three representative four-year-old sweet cherry cultivars with a certain fruit setting rate but instability and different chilling requirement in Hangzhou and Tai’an areas as the experimental materials,we studied and compared the development of female and male gametophytes,quality of floral organ and pollen in the same cultivar.The result revealed that there was a high proportion of empty pollen sac in the male gametophyte,which could result in less pollen quantity.In addition,the degradation and various abnormal types of male gametophyte led to its abortion.There was also a high proportion of ovule without embryo sac,which could cause female gametophyte abortion during the development of female gametophyte.The pollen quality was poorer in Hangzhou than in Tai’an.It is suggested that the abnormal development of male and female gametophytes could be the main reasons for very low fruit setting rate of sweet cherry in Hangzhou area.
作者
沈国正
刘辉
张琛
郗笃隽
裴嘉博
黄康康
SHEN Guozheng;LIU Hui;ZHANG Chen;XI Dujun;PEI Jiabo;HUANG Kangkang(Institute of Horticulture,Hangzhou Academy of Agricultural Sciences,Hangzhou 310024,China)
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2020年第2期168-176,共9页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
杭州市科学技术委员会重大自主设计项目(20180416A01)。
关键词
甜樱桃
花器官
发育质量
杭州
sweet cherry
floral organ
development quality
Hangzhou
