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Participatory Varietal Selection on Drought Tolerant Rice at Sundarbazar, Lamjung

Manjaree Maharjan, Bishnu Bilas Adhikari

Abstract


A Participatory Varietal Selection (PVS) trial was conducted in rainfed lowland at Sundarbazar, Lamjung with the objective to assess the performance of drought tolerant rice (DTR) genotypes on phenological, biometric, yield and yield attributing characters during rainy season 2017. The experiment was carried out in Randomized Complete Block Design with three replications and ten treatments consisting IR-14L635 (T1), IR-15L1043 (T2), IR-14L363 (T3), IR-15L1077 (T4), IR-14L613 (T5), IR-15L1091 (T6), IR-15L1018 (T7), IR-14L530 (T8), IR-14L247 (T9) and Sukhadhan-6 (T10) farmer’s preferred drought tolerant variety as standard check tested in 3m x 3m (9m2) plot size. Results revealed that the highest grain yield was obtained in IR-15L1091 (5.72ha-1) followed by IR-14L363 (4.89t ha-1) while the lowest grain yield was found in IR-14L613 (4.13 t ha-1). The highest grain yield of IR-15L1091 was supported by higher flag leaf area (28.67cm2), higher number of effective tiller m2 (250), long panicle length (26.9cm) and more panicle weight (3.6g). Preference ranking showed that the genotype IR-15L1091 got highest Preference Index (PI) (0.21) which come first rank followed by IR-15L1077 and IR14L247 (0.11 each) where the minimum score was secured by IR14L363 and IR14L635 (-.054 each). Grain yield has linear positive correlation with flag leaf area (r = 0.39), effective tillers per m2 (r=0.66), filled grains per panicle ((r=0.44). However, findings found very weak but positive linear relationship between plant height and straw yield (r=0.14). Most of the tested genotypes were semi dwarf and drought tolerant having good production potentiality which can easily fitted in existing cropping system in rainfed lowland in mid hills of Nepal. Key words: Design, Preference, Treatment, Yield, Harvest index

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