Thumbnail Image

Thesis

Browse

20122
Reset filters
Subject: Seed Science and Technology × Author: Praveenkumar K. Kallihal ×
Reset filters

Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on Seed Technological Approaches in Hybrid Pigeonpea (Cajanus cajan (L.) Millsp.)
    (UAS, Dharwad, 2012) Praveenkumar K. Kallihal; M.N. Merwade
    Field experiment was conducted at MARS, Dharwad on effect of growth regulators on seed yield and quality of pigeonpea hybrid during 2010-11 and 2011-12. Second experiment was conducted at Dharwad, Bijapur and Bagalkot on stability performance of ten genotypes and third experiment with three sowing dates at two locations was conducted for flowering behaviour of four genotypes. Varietal characterization was studied in Department of Seed Science and Technology, UASDharwad. Foliar spraying of planofix @ 0.5 ml/l recorded maximum number of flowers retained (305.33), pod number (303.3), pod yield (78.58 g & 3143 kg) and seed yield (57.75 g & 2310 kg) per plant and hectare with least flower drop (76.88 %) and higher 100 seed weight (11.71 g), germination (88.79 %), seedling length (25.88 cm) and vigour index (2299) followed by miraculan @ 1 per cent. Similar significant effects were recorded for growth regulators sprayed at flower initiation stage and interaction effect. Among the ten genotypes, ICPR-3762 was found highly stable for growth parameters while, ICPH-2740 and ICPR-3762 found stable for yield parameters at three locations based on regression coefficient (bi), regression deviation (S2di) and mean values. At Dharwad and Bagalkot locations, June 15th sowing recorded significantly higher pod number per plant (349.18 and 317.93), seed yield (70.33 and 56 g) per plant and (2813 and 2240 kg) per hectare. Among the four genotypes, ICPA-2043 recorded higher seed yield per plant and hectare at both locations. Morphological characterization of eleven genotypes based on seed, seedling and phenological characters was done. It was found more reliable for varietal identification. Eleven genotypes were grouped into three clusters and greater similarity within clusters was noticed. Genotypes ICPH-2671, ICPH-2740, ICPR- 2671 and ICPR-2740 were in Cluster-I; ICPA-2043, ICPA-2047 and ICPA-2092 in Cluster-II; ICPH-3762, ICPH-3461, ICPR-3762 and ICPR-3461 in Cluster -III sharing maximum genetic similarity.
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on Seed Technological Approaches in Hybrid Pigeonpea (Cajanus cajan (L.) Millsp.)
    (UAS Dharwad, 2012) Praveenkumar K. Kallihal; M.N. Merwade
    Field experiment was conducted at MARS, Dharwad on effect of growth regulators on seed yield and quality of pigeonpea hybrid during 2010-11 and 2011-12. Second experiment was conducted at Dharwad, Bijapur and Bagalkot on stability performance of ten genotypes and third experiment with three sowing dates at two locations was conducted for flowering behaviour of four genotypes. Varietal characterization was studied in Department of Seed Science and Technology, UASDharwad. Foliar spraying of planofix @ 0.5 ml/l recorded maximum number of flowers retained (305.33), pod number (303.3), pod yield (78.58 g & 3143 kg) and seed yield (57.75 g & 2310 kg) per plant and hectare with least flower drop (76.88 %) and higher 100 seed weight (11.71 g), germination (88.79 %), seedling length (25.88 cm) and vigour index (2299) followed by miraculan @ 1 per cent. Similar significant effects were recorded for growth regulators sprayed at flower initiation stage and interaction effect. Among the ten genotypes, ICPR-3762 was found highly stable for growth parameters while, ICPH-2740 and ICPR-3762 found stable for yield parameters at three locations based on regression coefficient (bi), regression deviation (S2di) and mean values. At Dharwad and Bagalkot locations, June 15th sowing recorded significantly higher pod number per plant (349.18 and 317.93), seed yield (70.33 and 56 g) per plant and (2813 and 2240 kg) per hectare. Among the four genotypes, ICPA-2043 recorded higher seed yield per plant and hectare at both locations. Morphological characterization of eleven genotypes based on seed, seedling and phenological characters was done. It was found more reliable for varietal identification. Eleven genotypes were grouped into three clusters and greater similarity within clusters was noticed. Genotypes ICPH-2671, ICPH-2740, ICPR- 2671 and ICPR-2740 were in Cluster-I; ICPA-2043, ICPA-2047 and ICPA-2092 in Cluster-II; ICPH-3762, ICPH-3461, ICPR-3762 and ICPR-3461 in Cluster -III sharing maximum genetic similarity.