Six tall growing genotypes possesing 30-40 leaves were crossed with two short statured early maturing genotypes with 19-20 leaves per plant. Eight hybrids and eight parents were studied. For plant height and number of leaves per plant dominance towards high expression in few hybrids and intermediary position bot ween the parents in other hybrids were observed. Four hybrid combinations viz. "Morden x 'Co. 1' 'EC. 75270 X 'Co 1 EC, 44281 x 'Morden' and 'SUF, 3, X "Morden' were found to be heterotic for seed yieid. The correlation analysis revealed significant positive association of plant height number of leaves. diamator of capitulum and number of soads/capitulum with seed yield.
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Tamil Nadu Agricultural University
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