CYTOGENETIC BEHAVIOR OF THE INTERSPECIFIC HYBRID OF MANIHOT NEUSANA NASSAR AND CASSAVA, M-ESCULENTA CRANTZ, AND ITS BACKCROSS PROGENY

被引：24

作者：

NASSAR, HN ^{[1
]}

NASSAR, NMA ^{[1
]}

VIEIRA, C ^{[1
]}

SARAIVA, LS ^{[1
]}

机构：

[1] UNIV FED VICOSA,DEPT FITOTECNIA,VICOSA,MG,BRAZIL

来源：

CANADIAN JOURNAL OF PLANT SCIENCE | 1995年 / 75卷 / 03期

关键词：

WILD SPECIES; MEIOTIC RESTITUTION; ANEUPLOIDY; DIPLOID GAMETE;

D O I：

10.4141/cjps95-113

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

An interspecific hybrid between cassava, Manihot esculenta Crantz, and M. neusana Nassar and the backcrossed progenies was examined meiotically and mitotically. The F-1 hybrid showed irregular meiosis due to unpaired chromosomes. The backcrossed progeny ranged in fertility from 17.7 to 35.8%. Meiotic restitution was also observed in all of the hybrids. Diploid pollen formation also occurred and ranged from 0.6 to 1.6%. Irregular meiosis among the F-1 hybrid produced aneuploidy in backcrossed progeny. When the F-1 hybrid was used as the maternal plant in backcrosses with cassava, this improved seed setting in the BC1 progenies, whereas the reciprocal backcross produced sterile progenies.

引用

页码：675 / 678

页数：4

共 28 条

[1]

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