Grain Yield Response Of Rice Cultivars Under Upland Condition
AbstractWith a view to understand the differences in yield among rice cultivars under drought, a comparative study was done using
53 rice genotypes including three local land races in both controlled and upland conditions. Ten yield components were
recorded in both the conditions. The correlation, path analysis and drought indices viz., relative yield (RY) and susceptibility
index (S) were worked out. The correlation studies revealed that the single plant yield (SPY) was significantly positively
correlated with number of leaves, number of tillers, number of productive tillers, number of primary branches per panicle,
number of secondary branches per panicle, number of grains per panicle, number of chaffs per panicle and boot leaf breadth
when evaluated under controlled irrigation condition. But none of the above traits had significant positive correlation with
SPY in upland condition. In the path analysis, it was found out that number of productive tillers per plant has a high positive
direct effect and most of other traits showed negligible or low direct effect in lowland condition, but in upland condition
none of the factors are having high direct effects towards SPY. From the S and RY, it was found that the local land races
and drought tolerant varieties MDU 5, TKM11 etc., performed well under upland condition.
It is certified that:
- The corresponding author is fully responsible for any disputes arising due to the publication of his/her manuscript.
- The article has been seen by all the authors who are satisfied with its form and content.
- The sequence of names of authors in the by-line is as per their relative contribution to this experiment, giving due credit to all scientists who made notable contribution to it.
- All the authors fully understand that inclusion of any other co-authors or exclusion of any co-authors is not possible once the article has been submitted to the journal.
- The corresponding author takes full responsibility for this article.
- The address of the organization where the research was conducted is given.
- The article is exclusive for this journal, and the results reported here have not been sent (and will not be sent during its consideration by this journal) for publication in any other journal.
- Authors agree to abide by the objective comments of referees and do agree to modify the article into a short note as per the recommendation, for publication in the Electronic Journal of Plant Breeding.
- If published in Electronic Journal of Plant Breeding, the copyright of this article would vest with the Indian Society of Plant Breeders, who will have the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in it, and neither we nor our legal heirs will have any claims on royalty.