Record Details

Evaluation of yield and seedling vigour related traits of Swarna/ Oryza nivara backcross introgression lines under three environment conditions.

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Evaluation of yield and seedling vigour related traits of Swarna/ Oryza nivara backcross introgression lines under three environment conditions.
Not Available
 
Creator Kavitha B, Divya B , Malathi S, AK Raju, and N Sarla
 
Subject Seedling vigour Yield Oryza nivara G×E interaction Stability
 
Description Not Available
Wild species are valuable resources in prebreeding programmes for broadening the genetic base and to identify
novel genetic variants. In this study we used advanced backcross introgression lines (BILs) generated from
Swarna/Oryza nivara cross. Fifteen BILs were evaluated for three seasons (kharif 2014, rabi 2015 and kharif
2015) for seedling vigour and yield related traits. Among these, seven BILs showed significantly higher yield over
Swarna. G × E interaction analysis for yield traits in three environments showed that BILs 166-2-9S, 166-2-3S,
166-23S, 166-9S, 166S and 166-32S were stable with high means for different yield traits. BIL166-9S showed
high seedling vigour and thousand grain weight (TGW) and BIL166-30S had high grain number in all three
environments. BIL248S (DRR Dhan40) showed high single plant yield (SPY) and spikelet fertility (SPF) in both
kharif seasons. Trait correlation showed significant positive correlation of panicle length with SPY and TGW.
Days to fifty percent flowering (DFF) was significantly associated with thousand grain weight (TGW). Significant
correlation was also observed between vigour traits and yield. In addition, seed germination percentage showed
significant correlation with plant height and tiller number. Root length was associated with SPY and TGW.
Molecular screening to detect the presence of yield related QTLs revealed that high yielding BILs 166-2-9S, 166-
9S and 166-21S showed O. nivara alleles for two yield enhancing QTLs qyldp2.1 (RM250-RM535) and qyldp9.1
(RM434-RM257) reported previously. These stable BILs are useful in rice improvement and to fine map QTL/
genes for seedling vigour and yield.
Not Available
 
Date 2024-06-11T14:32:23Z
2024-06-11T14:32:23Z
2019-01-01
 
Type Article
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/83552
 
Language English
 
Relation Not Available;
 
Publisher Not Available