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Amount of Outcrossing on Different Male Steriles of Rice 1
Author(s) -
Azzini L. E.,
Rutger J. N.
Publication year - 1982
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1982.0011183x002200050001x
Subject(s) - outcrossing , selfing , biology , oryza sativa , cultivar , population , agronomy , horticulture , pollen , botany , genetics , gene , demography , sociology
The amount of outcrossing on three short stature male steriles of rice ( Oryza sativa L.) was studied when planted in alternate rows with pollinators constituted of a mixture of tall cultivars. The seed set observed on the ‘Calady’ and ‘Earlirose’ genetic male steriles was very poor, indicating that neither can be considered useful in hybrid seed production or population improvement. The ‘Bit‐Co’ cytoplasmic male sterile source showed average seed set of 5.4% in 1978 and 32.5 % in 1979. The higher seed set in 1979 apparently was due to better synchronization of flowering of male and female plants. Some selfing occurs in this source, amounting to 3.5% in 1979.