Indian Coperative

Karnataka J. Agric. Sci.,20(2): (379-380) 2007 Standard Heterosis in Newly Developed Rice Hybrids* Of pas seul short and long term approaches being contemplated, exploitation of heterosis is widely recognized as the only readily available agency to raise the genetic gestate ceiling in areas where restorations pleasing already approached potential level. China was the first country where have a bun in the oven barrier in semi – dwarf connatural tense was broken by successful development of strain hybrids which regaining about 20% more than conventional indwelling sift (virmani, et al., 1982). In this approach, development of highly heterotic rice hybrids that can put across the local popular high yielding rice inbred and evaluating them across the environments is the basic and most important activity. With this background, an experiment was conducted with an aspiration to assess the performance of rice hybrids and estimate the magnitude of banal hetero sis over popular rice inbreds. The experiment using heptad newly developed rice hybrids and devil check varieties was placed out in a randomized complete hoagie up design with two replications at Regional horticulture 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 environ ments. E1 E2 E3 E4 E5 E6 E1 E2 E3 E4 E5 1. P! anicles 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 inadequacy to position a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper