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An Analysis of Grain Development in Oryza sativa L. Cultivars
Author(s) -
Vijayalakshmi C.,
Chandra Babu R.,
Sree Rangaswamy S. R.
Publication year - 1988
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.1988.tb00653.x
Subject(s) - cultivar , anthesis , oryza sativa , agronomy , grain yield , significant difference , biology , wheat grain , mathematics , biochemistry , statistics , gene
A field study was conducted to determine if differences in grain filling rate and duration existed in two early cultivars of rice. There is no cultivar difference in duration of grain filling and grain matured in about 30 days from anthesis in both the cultivars. The effective grain filling period in rice is only 10 days between 3rd and 13th day from anthesis. There is significant difference in grain filling rate and is positively related to grain weight. Grain filling rate is more important than duration of filling for achieving higher grain size and thus yield in rice.