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Heterosis and Inbreeding Depression Estimation of Root and Shoot Characters in Rice ( Oryza sativa L.)
Author(s) -
Sasmal B.,
Banerjee J.
Publication year - 1986
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1986.tb00015.x
Subject(s) - heterosis , diallel cross , inbreeding depression , biology , oryza sativa , shoot , agronomy , dry weight , inbreeding , hybrid , population , genetics , demography , sociology , gene
The nature and extent of hybrid vigour and inbreeding depression were estimated from a diallel set of rice varieties. The seven parents and their 21 F 1 s and 21 F 2 s were grown in pots with four replications. Data were collected on four root and two shoot characters. Maximum heterosis was recorded for root weight followed by roots/plant and root length. The inbreeding depression did not significantly affect the dry root weight in majority of the crosses. Heterosis for shoot weight was found to be associated with the heterosis for roots/plant and root weight.