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Fourteen cotton genotypes were evaluated during 1990-91 for physiological parameters and yield attributes for higher productivity under rainfed condition. Productivity of high yielding genotypes was associated with low leaf area, high total dry matter, higher leaf efficiency, higher harvest index and boll number per plant. Among the high leaf area genotypes, Allepox Rex was identified as the best performer.

The pearl millet hybrid ABH 219 (1 111A x PT 1890) was developed at Millet Breeding Station, School of Genetics, Tamil Nadu Agricultural University Coimbatore. This hybrid recorded. an overall mean grain yield of 2513 kg/ha (12.4% over X6) under rainfed conditions and 3295 kg/ha (12.8% over X6) under irrigated conditions. It is resistant to downy mildew (3%), and posses 4-7 possess productive tillers, high protein content (13.8%), synchronised flowering and medium grain. size. The cytoplasmic background of the new hybrid is different from that of the already existing hybrid X6. Hence it was released as X7 for general cultivation in Tamil Nadu.

Genetics of yield components was investigated from combining ability in line X tester design under different environmental conditions in Pearlmillet. The variance due to females was significant for number of tillers, number of grains and single plant yield. The males were also significantly different in respect to panicle length and grain yield. Both additive and non-additive gene effects were important for the expression of yield characters. 732A and PT1650 were best general combiners for grain yield. Best cross combinations for various components were selected and their use in breeding programmes has been advocated..

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