International Journal of Agricultural Sciences

Mahesh Kumar Mehta ¹, S. Narender Reddy ¹, A. Siva Sankar ¹, C. H. Surender Raju ¹

Affiliations
1 Department of Crop Physiology, College of Agriculture, Acharya N.G. Ranga Agricultural University, Hyderabad, A.P., IN

Abstract

An experiment was conducted to study physiological attributes and yield in eight aromatic rice genotypes during Kharif 2010-2011. Results showed that maximum LAI, CGR, NAR, RGR, LAD and LAR were recorded in the variety RNR 2354. Highest dry matter Production was recorded in genotype RNR 2354 while lowest dry matter production was recorded in genotype Pusa 1121.Maximum SPAD values were recorded for genotype RNR 2354 throughout the crop growth period and minimum was found for the genotypes Chittimuthyalu. Highest grain yield was recorded in genotype RNR 2354 and the lowest grain yield was recorded in Pusa 1121. The aromatic rice varieties differed significantly with respect to yield components like number of panicles per meter square, number of spikelets per panicle, 1000 grain weight, filled grain percentage and harvest index.

Keywords

Aromatic Rice, Growth Parameters, SPAD Values, Yield, Harvest Index

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M. Rajendar Reddy ¹, CH. Surendar Raju ², D. Sravani ¹, S. Narender Reddy ¹

Affiliations
1 Department of Genetics and Plant Breeding, College of Agriculture, Acharya N.G. Ranga Agriculture University, Rajendranagar, Hyderabad, A.P., IN
2 Agricultural Research Institute, Acharya N.G. Ranga Agriculture University, Rajendranagar, Hyderabad, A.P., IN

Abstract

A field experiment was conducted during Rabi, 2009-10 and Kharif, 2010 involving 7 parents, 7 F1 hybrids and their corresponding F2 populations to study the inbreeding depression and residual heterosis for kernel characters i.e. kernel length, kernel breadth, L/ B ratio in aromatic rice. The cross combinations, PUSA1121 × BM71 and PUSA1121× MTU1010 for kernel length were identified as better crosses for further advancement to develop pure lines with high yield and quality.

Keywords

Aromatic Rice, Kernel Characters, Inbreeding Depression, Residual Heterosis, Heterosis

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