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2016 - 20202
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Subject: Plant Physiology × Author: Ajeev Kumar × Start date: 1985 ×
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    ThesisItemOpen Access
    Effect of different sowing dates on morpho-physiological and yield traits in chickpea (Cicer arietinum L.) genotypes.
    (CCSHAU, Hisar, 2020-08) Ajeev Kumar; Neeraj Kumar
    The present study was conducted with ten genotypes viz ICCV 88503, ICCV 92944, HC- 1, HC-3, HC-5, H12-64, H13-01, H13-02, H14-01 and H14-04 for three dates of sowing i.e 15th October, 15th November and 15th December in the field in randomized block design during Rabi season of 2017-18 and 2018-19 with objective to identify promising chickpea genotypes in terms of morpho-physiological and yield traits for different sowing dates. Among different sowing dates, phenological traits (Days to 50 % flowering, podding and physiological maturity) were minimum (81.1, 97.1,126.2 days) in 15th December and maximum (89.2, 107.6, 137.8 days) in 15th October. Among genotypes, H12-64 and H13-01 took minimum days while H14-04 took maximum days for all phenological traits. Plant height, dry weight, CGR, RGR, NAR and LAI were found to be maximum in 15th October and minimum in 15th December sowing at all the growth stages of chickpea. Maximum growth parameters recorded in genotypes H12-64 and H13-01 and minimum were in H14-04. Among physiological traits, maximum leaf water potential (-30 Mpa), leaf osmotic potential (-71 Mpa), relative water content (RWC, 88.5%), chlorophyll contents (5.402 mg g-1DW), carotenoids content (3.742 mg g-1DW), chlorophyll a fluorescence (0.689 Fv/Fm) and pollen viability (69.00 %) were in 15th November and minimum (-35 Mpa, -87 Mpa, 61.5%, 3.516 mg g-1DW, 2.967 mg g-1DW, 0.667, 64.11%) respectively, in 15th November sowing and among genotypes, H13-01had maximum (-26 Mpa, -73 Mpa, 82.3%, 5.027 mg g-1DW, 3.859 mg g-1DW, 0.717, 72.1%) and genotype H14-04 had minimum (-44 Mpa, -99 Mpa, 67.1%, 4.160 mg g-1DW, 2.858 mg g-1DW, 0.638 and 60.4%) physiological traits while RSI, CTD and anthocyanin content were maximum (11.03 %, -2.20 0C, 2.79 mg g-1DW) in 15th December and minimum (9.86 %, -0.28 0C, 1.51 mg g-1DW) respectively, in 15th November sowing and among genotypes, H13-01 showed lowest (9.33%, -0.500C, 2.19 mg g-1DW) and H14-04 showed highest RSI, CTD and anthocyanin content (11.26%, -1.700C, 2.41 mg g-1DW). However, maximum proline content, glycine betaine, TSC, H2O2 content, MDA content (0.915, 0.204, 7.5 mg g-1 DW, 15.4, 63.8μ moles g-1 DW,) were in 15th December and lowest (0.581, 0.028, 4.5 mg g-1 DW, 10.9 μ moles g-1 DW, 42.0 μ moles g-1 DW) respectively, were in 15th November sowing and in genotypes, maximum proline content glycine betaine, TSC (0.899, 0.206, 7.6 mg g-1 DW) were recorded in H13-01 and minimum (0.656, 0.077 and 5.9 mg g-1 DW) respectively, were recorded in H14-04 while minimum MDA content (45.9 μ moles MDA g-1 DW) and H2O2 content (6.9 μ moles g-1 DW) in were recorded in H13-01 and maximum MDA content (57.8 μ moles MDA g-1 DW) and H2O2 content (16.3 μ moles g-1 DW) were recorded in H14-04. Maximum specific activity of enzymes, SOD, CAT, POX, APX, GR{6.7, 7.0, 6.0, 0.45, 0.55 Units mg-1 (protein) min-1}and more accumulations of antioxidants i.e Ascorbate content, glutathione content (0.91,1.24 μ mol g-1 DW) were recorded in December 15th and minimum {2.2, 2.0, 2.7, 0.23, 0.23 Units mg-1 (protein) min-1 and 0.56, 0.75 μ mol g-1 DW} respectively, were in November 15th sowing. The maximum seed yield (2113 kg/ha) and yield attributing characters like number of branches (6.2), number of pods per plant (79.0), 100 seed weight (16.12 g), biological yield (6923 kg/ha) and harvest index (30.5 %) were in 15th October and lowest seed yield (1889 kg/ha) and yield attributing characters (3.9, 38.5,13.47g, 6333 kg/ha and 29.5%) respectively, were in 15th December sowing and among genotypes, maximum seed yield (2325 kg /ha) and yield attributing characters like number of branches (5.2), number of pods per plant (77.7), 100 seed weight (16.45 g), biological yield (7358 kg/ha) and harvest index (31.6%) were found to be in genotype H13-01 and lowest seed yield (1593 kg/ha) and yield attributing characters (4.4, 43.0, 13.10, 5625 kg/ha and 27.1%) respectively, were exhibited by genotype H14-04.
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    ThesisItemOpen Access
    Morpho-physiological responses of Indian mustard (B. juncea (L.) Czern & Coss.) genotypes to different sowing dates
    (CCSHAU, 2016) Ajeev Kumar; Sandooja, J.K.
    The present study entitled “Morpho-physiological responses of Indian mustard (Brassica juncea L.) genotypes in different sowing dates”, was conducted with 6 genotypes viz RH-0116, RH-725, RH- 923, RH-1019, RH-1077, RH-1301 for three dates of sowing i.e 23 September, 16 October & 21 November in the field in randomized block design during rabi season of 2015-16 with objective to identify promising mustard genotypes in terms of morpho-physiological traits for different sowing dates. The days to emergence of seedlings and 50 % flowering were minimum in 16 October and maximum values in 21 November sowing. Among genotypes, RH-725 took minimum days to emergence of seedlings and 50 % flowering in 16 October while RH-1077 took maximum days in 21 November sowing. The plant height, CGR and RGR were maximum in 23 September and minimum in 21 November sowing at all the growth stages of Brassica juncea. The genotype RH-725 had highest values of all growth parameters when sown on 23 September and genotype RH-1077 had lowest values when sown on 21 November. The values of water potential, osmotic potential, RWC and chlorophyll a fluorescence was maximum in 16 October and minimum values in 21 November sowing and among genotypes RH-725 had maximum values when sown on 16 October and genotype RH-1077 had minimum values when sown on 21 November. The relative stress injury (RSI %) was maximum in 21 November sowing and minimum values in 16 October sowing and among genotypes, RH-725 had lowest value of RSI when sown on 16 October and genotype RH-1077 had highest value of RSI when sown on 21 November. The proline and glycine betaine content were maximum in 21 November sowing and minimum values were in 16 October sowing and among genotypes, RH-0116 had maximum values when sown on 21 November while RH-725 had minimum values when sown on 16 October. The yield and yield attributing parameters were maximum in 16 October and minimum in 21 November sowing and among genotypes RH-725 had highest values when sown on 16 October while RH-1077 had lowest values when sown on 21 November.