UCH 4, a hybrid combination between MS 5141A and PT 1921, an inbred of African origin, is high yielding with a recorded mean grain vield of 2531 kg/ha as against 2136 and 2131 kg/ha recorded respectively by the presently popular hybrids KM 1 (BJ 104) and KM 2 (BK 560) under irrigated conditions. This hybrid has recorded grain yields exceeding 3500 kg/ha at ten centres out of a number of luuation teste conducted in Tamil Nadu and outside, This indicates its high yield potential. As a rainfed crop it registered a mean grain yield of 958 kg/ha which was a marginal increase of 7.6 per cent over KM 1 and 1,1 per cent over KM. 2. UCH. 4 has long compact panicles with bold grains and is resistant to downy mildew. It has a wide adaptability. The grains contain 10.3 per cent protein with a digestibility of 81.65 and a biological value of 82.30, In view of its high yield, resistance to downy mildew and wide adaptability. this hybrid was released as X-4 for general cultivation in Tamil Nadu.
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Tamil Nadu Agricultural University
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Tamil Nadu, India.
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Madras Agricultural Journal (MAJ)
Madras Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641
003
Tamil Nadu, India.
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