Abstract:
:Flooding is one of the major constraints for rice production in rainfed lowlands, especially in years and areas of high rainfall. Incorporating the Sub1 (Submergence1) gene into high yielding popular varieties has proven to be the most feasible approach to sustain rice production in submergence-prone areas. Introgression of this QTL into popular varieties has resulted in considerable improvement in yield after flooding. However, its impact under non-flooded conditions or years have not been thoroughly evaluated which is important for the farmers to accept and adopt any new version of their popular varieties. The present study was carried out to evaluate the effect of Sub1 on grain yield of rice in different genetic backgrounds, under non-submergence conditions, over years and locations. The study was carried out using head to head trials in farmer's fields, which enable the farmers to more accurately compare the performance of Sub1 varieties with their recurrent parents under own management. The data generated from different head to head trials revealed that the grain yield of Sub1 varieties was either statistically similar or higher than their non-Sub1 counterparts under non-submergence conditions. Thus, Sub1 rice varieties show no instance of yield penalty of the introgressed gene.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Dar MH,Zaidi NW,Waza SA,Verulkar SB,Ahmed T,Singh PK,Roy SKB,Chaudhary B,Yadav R,Islam MM,Iftekharuddaula KM,Roy JK,Kathiresan RM,Singh BN,Singh US,Ismail AMdoi
10.1038/s41598-018-27648-ysubject
Has Abstractpub_date
2018-06-18 00:00:00pages
9245issue
1issn
2045-2322pii
10.1038/s41598-018-27648-yjournal_volume
8pub_type
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