Anil KumarSharma, Saurav2019-01-092019-01-092018http://krishikosh.egranth.ac.in/handle/1/5810089476The present experiment entitled “Morpho-physiological characteristics, biomass partitioning and productivity of pearl millet (Pennisetum glaucum L.) hybrids and their parents (B and R - lines) under rainfed & irrigated situations” was conducted in Research Area of Bajra Section, Department of Genetics and Plant Breeding, CCS Haryana Agricultural University, Hisar during kharif seasons of 2016 and 2017 with the objective to find out the comparative performance of newly developed pearl millet hybrids and their parents in terms of morpho-physiological characteristics, partitioning of biomass and productivity under both irrigated and rainfed situations. The experiment consisting of 36 different treatments i.e., six pearl millet hybrids (HHB 67 Improved, HHB 197, HHB 272, HHB 226, HHB 234 and HHB 223) and their female lines i.e., B-Lines (ICMB 843-22, ICMB 97111, HMS 47 B, ICMB 843-22, HMS 7B and ICMB 94555) and male lines R-Lines (H-77/833-2-202, HBL-11, AC 04/13, HBL-11, H-77/833-2-202 and HBL-11) under two environments rainfed and irrigated were laid out in factorial randomized block design with three replications. Phenological events like 50% flowering and physiological maturity were early among hybrids (1.0 and 2.3 days), B-Lines (1.6 and 2.7 days) and R-Lines (0.9 and 1.2 days) under rainfed condition than irrigated environment. Growth parameters, growth indices and yield attributes were superior under irrigated environment than rainfed condition. The growth indices CGR and NAR attained their peak between 21-40 days of crop. The periodical biomass partitioning studies revealed that upto 40 days of the crop stages, maximum contribution was from leaves. Whereas, after that contribution of stem and earhead continue increased upto maturity of the crop. Plant water relation and physiological studies showed more values of leaf water potential, relative water content (%) and chlorophyll content among hybrids (-1.09, 79.0% and 52.5%), B-Lines (-1.10, 71.4% and 51.3%) and R-Lines (-1.10, 70.5% and 51.0%), respectively at 60 DAS under irrigated condition than rainfed situation. The hybrid HHB 197 and HHB 223 had reflected more values of these traits under rainfed and irrigated situations and proved to be best yielder. The grain yield, stover yield and biological yield were obtained higher in hybrid HHB 197 (30.33, 76.18 and 106.51 q ha-1) under rainfed environment and in HHB 223 (37.36, 91.59 and 128.94 q ha-1) under irrigated situation, whereas, among B-Lines, these values were maximum in ICMB 94555 and in R-Lines AC 04/13 under both of the environments. More growing degree days (GDD), photo thermal units (PTU) and helio thermal units (HTU) were exhibited by crop under irrigated environment than rainfed situation. Among hybrids better values of these parameters were exhibited by HHB 197 (1436.2 0C day, 18311.9, and 10068.8 0C day hour) and HHB 223 (1481.7 0C day, 18819.1 and 10342.7 0C day hour) under rainfed and irrigated environments, respectively. Among R-Lines, these parameters were maximum in AC 04/13. The GDD, HTU, PTU, HUE and RUE were maximum in B-line ICMB 94555 and ICMB 97111 under both the environments.ennullThesis