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A New Semidwarf Mutant in a Long‐Grain Rice Cultivar 1
Author(s) -
McKenzie K. S.,
Rutger J. N.
Publication year - 1986
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/cropsci1986.0011183x002600010019x
Subject(s) - biology , germplasm , oryza sativa , sterility , cultivar , mutant , genetics , gene , agronomy
The inheritance of an induced short stature mutant, Short Labelle, recovered from the rice ( Oryza sativa L.) cultivar Labelle was investigated. In crosses with Labelle and ‘Lebonnet’, the F 1 plants were tall, and the short stature characteristic segregated as a single recessive factor in the F 2 generation. Progeny tests in a cross with ED7 indicated Short Labelle carried semidwarfing gene nonallelic to the sd 1 > gene in ED7. F 1 sterility and F 2 segregation for sterility was observed in the Labelle and Lebonnet crosses. Pleiotropic effects on grain and mesocotyl lengths were noted. In 2 yrs of multiple location testing the agronomic characteristics of Short Labelle were similar to Labelle, although Short Labelle yields were generally lower. However, because it has a semidwarfing gene nonallelic to the sd 1 source, Short Labelle may be a useful germplasm source for rice improvement.