珍珠粟（Pennisetum americanum (L.) K. Schum）的三级三体：其细胞形态学、育性和传递。

Tertiary trisomics of pearl millet (Pennisetum americanum (L.) K. Schum): its cytomorphology, fertility and transmission.

机构信息

Department of Genetics and Plant Breeding, Institute of Agricultural Sciences, Banares Hindu University, Varanasi, India.

出版信息

Theor Appl Genet. 1982 Jun;63(2):139-44. doi: 10.1007/BF00303696.

DOI:10.1007/BF00303696

PMID:24270761

Abstract

Nineteen tertiary trisomics were isolated from some translocation heterozygotes and interchange trisomics of pearl millet. Cytological analysis of these trisomics indicates that chromosome association of trivalents, univalents and pentavalents were frequent in all the trisomics. But their ratio varied from one trisomic to the next. Other associations were relatively infrequent. The relative frequencies of 6 pentavalent configurations observed in different trisomics were studied and their probable association with mode of fertility and transmission rates have been discussed.

摘要

从一些珍珠粟易位杂合体和相互易位三体中分离出 19 个三级三体。对这些三体的细胞学分析表明，所有三体中三价体、单价体和五价体的染色体联合是频繁的。但它们的比例从一个三体到另一个三体有所不同。其他的联合相对较少。研究了不同三体中观察到的 6 种五价体构型的相对频率，并讨论了它们与可育性模式和传递率的可能联系。