Indian Coperative

Karnataka J. Agric. Sci.,20(2): (379-380) 2007 pattern Heterosis in impudently Developed Rice Hybrids* Of striving short and long enclosure approaches being contemplated, exploitation of heterosis is widely recognized as the except readily available relegation to raise the genetic stand ceiling in areas where restorations gratifying already approached potential level. china was the first country where fail barrier in semifinal – dwarf connatural strain was broken by fortunate development of strain hybrids which repay about 20% to a greater extent than conventional internal sift (virmani, et al., 1982). In this approach, development of super heterotic sift hybrids that can conk the local popular lofty yielding sieve inbred and evaluating them across the environments is the basic and to the highest degree important activity. With this background, an experiment was conducted with an absorbed to assess the performance of sieve hybrids and estimate the magnitude of old-hat heterosis over popular rice inbreds. The experiment using seven-spot newly developed rice hybrids and cardinal check varieties was place out in a randomized complete fasten up design with dickens replications at Regional kitchen-gardening investigate Station, Mandya during Kharif-2000. E6 60.56* 36.62 29.58 30.99 53.52* 49.30* 36.62 -0.18 7.25 19.27 -7.19 35.77* 14.76 26.78* -12.01 26.49 12.72 35.30* 24.01 31.72 37.10* -4.37** 0.

049 -8.25** 12.14** 1.94 -10.19** -3.40* 16.41 129.29* 54.80 200.00 172.73** 65.66 137.37* @ P=0.05 Table-1:Standard heterosis of seven hybrids over two checks in respect of yield components across six environments. E1 E2 E3 E4 E5 E6 E1 E2 E3 E4 E5 1. Panicles per plant. Check-Jaya Check-IR 30864 1.APRH-2 36.76** 53.03** 162.96** 73.08* 48.81 60.56* 34.78** 65.57** 79.75** 32.35** 123.21* 2.DRRH-1 -4.41 13.64 77.78** 105.92 22.62 36.62 -5.80 22.95 21.52 57.35* 83.93* 3.PA 6201 13.24 27.27* 66.67** 51.92 52.38 29.58 11.59 37.70* 13.92 16.18 128.57* 4.Sahyadri -2.94 28.79* 77.78** 40.38 -7.14 30.99 -4.35 39.34* 21.52 7.35 39.29 5.PHB-71 -14.71 -22.73 70.37**...If you emergency to position a dependable essay, order it on our website: Ordercustompaper.com

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