Peach exhibits different phenological stages throughout its vegetative period in response to environmental conditions. Fifteen different stages were identified during the annual growing cycle of low chill peach at subtropical condition. Dormancy break first started in Saharanpur Prabhat and Pant Peach-1 during last week of January. Initiation of bloom first (8–20 Feb) noticed in Flordaprince, Sharbati Surkha and Earligrande, while full bloom was first noticed in Flordaprince Pratap and Pant Peach-1 and end of flowering earliest in Pant Peach-1 (mid to end February). Fruit maturity is important character for good market price, early maturity was recorded in Sharbati, Sharbati Surkha, Flordaprince and Pratap (last week of April to May 1st week). Maximum production efficiency (4.98 fruit/cm2 TCSA,) was recorded in Pratap. Fruit weight varied from 34.85–80.57 g in different cultivars. Maximum heat use efficiency (HUE) 51.87 kg/cm2 TCSA degree days was registered in Pratap and Earligrande (31.82 kg/cm2 TCSA degree/day/ year). For successful cultivation of low chill peaches under subtropics Flordaprince, Sharbati and Sharbati Surkha selected as early maturing, Shan-e-Punjab, Earligrande and Pratap as mid maturing and Pant Peach-1 has been found as late maturing cultivars.
Background: Study of phenotypic coefficient of variation (PCV) and genotypic coefficient of variation (GCV) reveals the extent of phenotypic and genotypic variability in given population, respectively. Correlation and path analysis helps in identifying suitable selection criteria for improving the crop yield.Methods: Plant material comprised of 68 genotypes belongs to early maturity group of pigeonpea and experiment conducted during Kharif 2015-16 in randomized complete block design with two replications. Result: Traits, seed yield per plant (GCV=51.56%, h2=97.13%, GAM=104.67%) and number of pods per plant (GCV= 49.01%, h2=99.07%, GAM=100.49%) had high values of genotypic coefficient of variation (GCV), heritability (h2) and genetic advance as % of the mean (GAM) which indicated their additive genetic control. Plant height and number of seeds per pod recorded moderate to low heritability coupled with low GAM, indicating non-additive genetic control for these characters. Correlation analysis has revealed significant and positive association of seed yield per plant with number of pods per plant, plant height, secondary branches per plant, 100-seed weight and primary branches per plant. Path coefficient analysis identified number of pods per plant, secondary branches per plant and 100-seed weight as major traits affecting seed yield per plant directly and indirectly. The number of pods per plant and 100-seed weight should be given greater emphasis for improvement of seed yield in pigeonpea.
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