Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6374966 | Field Crops Research | 2015 | 11 Pages |
Abstract
Mean reduction in grain yield was 52-55% under the terminal drought screening while it was 10-19% for the whole population and 23-33% for early flowering genotypes in the intermittent drought. Delay in flowering under intermittent drought condition at both locations was associated with yield reduction; genotypes that exhibited shorter delay in flowering had smaller yield reduction percentage and larger number of panicles. At Chum Phae, where grain yield reduction was associated with flowering time, genotypes with longer flowering duration under terminal drought had smaller yield reduction, and this was found even among genotypes that flowered about the same time under flood condition. However, there was no association between delay in flowering and flowering duration. It is concluded that delay in flowering appears promising as a selection criterion under intermittent drought conditions, provided a higher yield reduction can be achieved for example by using an increased irrigation interval.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Agronomy and Crop Science
Authors
T. Monkham, B. Jongdee, G. Pantuwan, J. Sanitchon, J.H. Mitchell, S. Fukai,