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This study was conducted to investigate variability, heritability and genetic advance among F5:6 lines of rice for various morphological traits. Thirty-eight lines derived from F5 rice cross combinations along with their 8 parents were planted in a randomized complete block design (RCB) having three replications at The University of Agriculture, Peshawar during 2016 rice crop growing season. Data were taken on some of the morphological 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 parents vs F5:6 lines for all the studied traits. Among the F5:6 lines, AUP-304 showed minimum days to heading (91 days) while the F5:6line AUP-361 took minimum days to maturity (118 days). F5:6line AUP-311 exhibited maximum flag leaf area (55 cm²) and maximum culm length (132.3 cm). Maximum panicle length (28.3 cm) among F5:6lines was recorded for AUP-271, whereas, AUP-345 and AUP-322 showed best performance for primary panicle branches (13) and secondary panicle branches (41.3), respectively. High broad-sense heritability estimates were observed for all the studied characters, number of days to maturity (99.6%), culm length (99.4%), flag leaf area (98.9%), days to heading (95.9%), secondary branches panicle-1 (88.3%), panicle length (70.7%) and primary branches panicle-1 (60.6%), respectively. Genetic advance estimation showed that 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 early maturity, area of flag leaf and panicle contributing traits like primary and secondary branches panicle-1 F5:6lines AUP-361, AUP-311 and AUP-345, AUP-322 could be advanced further in multi-locations trials to develop new rice genotypes for local cultivation. [ABSTRACT FROM AUTHOR]

This study was performed to assess resistance potential of 142 indigenous accessions along with two check cultivars against bacterial leaf blight disease at the University of Agriculture, Peshawar-Pakistan during 2011 rice crop growing season. On artificial inoculation with Xanthomonas oryzae pv. Oryzae, the fundamental agent of bacterial leaf blight, most of the studied rice accessions and the two commercial rice cultivars displayed susceptible reactions. Seven rice accessions viz. UoA-2, UoA-5, UoA-11, UoA-48, UoA-53, UoA-102, and UoA-123 showed moderate levels of resistance while eleven rice accessions viz. UoA-4, UoA-6, UoA-22, UoA-41, UoA-60, UoA-67, UoA-68, UoA-84, UoA-126, UoA-129 and UoA-133 displayed strong resistance against the disease. The use of these resistant rice accessions are, therefore, recommended for deploying bacterial leaf blight resistant genes into commercial rice cultivars. [ABSTRACT FROM AUTHOR]