مرکز منطقه ای اطلاع رساني علوم و فناوري - Genetic Variability, Heritability and Genetic Advance for Morphological Traits in F5:6 Rice Lines

Author/Authors :

iqbal, arshad university of agriculture - department of plant breeding and genetics, Peshawar, Pakistan , shah, mehar ali university of agriculture - department of plant breeding and genetics, Peshawar, pakistan , ur rahman, hidayat university of agriculture - department of plant breeding and genetics, Peshawar, Pakistan , aman, faiza university of agriculture - department of horticulture, Peshawar, Pakistan , aziz-ur-rahman, . university of agriculture - department of plant breeding and genetics, Peshawar, Pakistan.

Abstract :

This study was conducted to investigate variability, heritability and genetic advance among F5:6 linesof rice for various morphological traits. Thirty-eight lines derived from F5 rice cross combinations along withtheir 8 parents were planted in a randomized complete block design (RCB) having three replications at TheUniversity of Agriculture, Peshawar during 2016 rice crop growing season. Data were taken on some of themorphological traits like number of days to heading (days), number of days to maturity (days), flag leaf area(cm2), culm length (cm), panicle length (cm), primary branches panicle-1 (no.) and secondary panicle branches(no.). Analysis of variance showed highly significant (p ≤ 0.01) differences for parents, F5:6 lines and parentsvs F5:6 lines for all the studied traits. Among the F5:6 lines, AUP-304 showed minimum days to heading (91days) while the F5:6 line AUP-361 took minimum days to maturity (118 days). F5:6 line AUP-311 exhibitedmaximum flag leaf area (55 cm2) and maximum culm length (132.3 cm). Maximum panicle length (28.3 cm)among F5:6 lines was recorded for AUP-271, whereas, AUP-345 and AUP-322 showed best performancefor primary panicle branches (13) and secondary panicle branches (41.3), respectively. High broad-senseheritability estimates were observed for all the studied characters, number of days to maturity (99.6%), culmlength (99.4%), flag leaf area (98.9%), days to heading (95.9%), secondary branches panicle-1 (88.3%), paniclelength (70.7%) and primary branches panicle-1 (60.6%), respectively. Genetic advance estimation showedthat flag leaf area exhibited high genetic advance (40.2%) followed by secondary branches panicle-1 (36.6%)and culm length (31.4%) among studied traits of rice genotypes. On the basis of good performance for earlymaturity, area of flag leaf and panicle contributing traits like primary and secondary branches panicle-1 F5:6 lines AUP-361, AUP-311 and AUP-345, AUP-322 could be advanced further in multi-locations trials todevelop new rice genotypes for local cultivation.