PRODUCTION OF TRIPLOID CASSAVA, MANIHOT-ESCULENTA CRANTZ BY HYBRID DIPLOID GAMETES

被引：18
|
作者：
NASSAR, NMA
机构：
[1] Departamento de Agronomia, Universidade de Brasilia, Brasilia
来源：
FIELD CROPS RESEARCH | 1992年 / 30卷 / 1-2期
关键词：
D O I：
10.1016/0378-4290(92)90066-I
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
A natural hybrid of Manihot pseudoglaziovii Pax & K. Hoffmann and cassava was collected, grown, multiplied vegetatively and studied cytogenetically. The meiotic division showed fairly regular chromosome pairing and formation of 2n pollen. When selfed, a triploid was selected from among its progeny and reported here for the first time. Evaluation of this triploid for agronomic traits showed a high productivity of tuberated roots and resistance to stem borers under semi-arid conditions. The implication of intraspecific hybridization correlated with 2n gamete formation in cassava plant breeding perspectives is discussed.
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页码：173 / 182
页数：10
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