摘要
对300多个纯合二倍体结球甘蓝花粉母细胞减数分裂各时期的染色体进行观察,发现自然条件下纯合二倍体甘蓝花粉母细胞在减数分裂的双线期、终变期以及中期Ι出现了高频率的1～3个四价体和中期Ι有高频率的1～3对染色体提早分离和滞后分离2种异常现象,探讨了甘蓝结实率不高与染色体异常行为之间的关系。
The chromosomes from more than 300 pollen mother cells of homozygous diploid of Brassica oleraces vat. Capitata L. were observed in every period of meiosis. It was found that altofrequent 1 - 3 quadrivalent appeared in diplotene, diakinesis and metaphase I of meiosis of pollen mother cells of B. oleraces var. Capitata under natural conditions, and 2 kinds of abnormal phenomenas such as altofrequent 1 - 3 pairs of chromosomes separated early or late in metaphase I of meiosis. The relationship between low seed setting rate of B. oleraces var. Capitata and chromosome abnormal behavior was explored.
出处
《安徽农业科学》
CAS
北大核心
2009年第30期14653-14655,共3页
Journal of Anhui Agricultural Sciences
基金
陕西省科技计划项目(07JK447)
关键词
结球甘蓝
减数分裂
异常行为
结实率
Brassica oleroces var. Capitata L.
Meiosis
Abnormal behavior
Seed setting rate
作者简介
邵治亮（1965-），男，陕西横山人，副教授，博士，从事旱区农业研究工作。
