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Author: Anil Kumar × End date: 2019 × Start date: 2019 ×
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    ThesisItemOpen Access
    Effect of seed size and plant spacing on seed production of potato cv. Kufri Khyati
    (CCSHAU, 2019) Anil Kumar; Phor, S.K.
    The experiment entitled “Effect of seed size and plant spacing on seed potato production cultivar Kufri Khyati.” was conducted at Vegetable Seed Production and Research Farm, KVK Sonipat during winter season of the year 2017-18. The experiment comprising of five seed sizes (15-30 g, 31-60 g, 61-90 g, 91-120 g and 121-150 g) and three plant spacing (60x20, 60x30 and 60x40 cm) was laid out in a random block design with three replications keeping net plot size 4.8x3.6 m. Five competitive plants were selected randomly from each experimental treatment to record data on various parameters, which were influenced significantly by different seed size and plant spacing. The per cent plant emergence, plant height, number of stems per hill, number of leaves per hill, weight of stems, weight of leaves, number of tubers of up to 25 g, weight of tubers up to 25 g, tuber dry matter content were statistically higher with the seed size 121-150 g and the number of tubers >25-50 g grade, weight of tubers >25-50 g, harvest index, percent seed tuber were maximum with the seed size 61-90 g. However, the value for number of tubers >50-75 g and >75 g grade, weight of tubers >50-75 g and >75 g grade and total tuber yield were maximum with the seed size 91-120 g. Different plant spacing exhibited significant difference growth and yield parameters. The maximum value for plant emergence, plant height, number of tubers up to 25 g, >25-50 g, >50-75 g and >75 g grade, weight of tubers up to 25 g, >50-75 g and >75 g grade, tuber dry matter content, percent seed tuber and total tuber yield were maximum with 60x20cm plant spacing. However, number of stems per hill, number of leaves per hill, weight of stems, weight of leaves and harvest index was found maximum with plant spacing 60x40 cm. Significantly highest value was registered for number of stems, number of leaves, weight of stems, weight of leaves, with seed size 121-150 g in combination with spacing of 60x40 cm. Maximum value for number and weight of tubers up to 25 g found with seed size 121-150 g in combination with spacing of 60x40 cm while maximum value for number and weight of tubers >75 g grade, total tuber yield was found with seed size 91-120 g in combination with spacing of 60x20 cm. Significantly maximum value for number of tubers >25-50 g and >50-75 g and weight of tubers >25-50 g and >50-75 g found with seed size 61-90 g in combination with spacing of 60x20 cm. Effect of seed size and plant spacing showed remarkable variation for growth and yield for all the parameters. Kufri Khyati produced highest total tuber yield (358.60 q/ha) when 91-120 g seed tubers were planted at a spacing 60x20 cm which was followed by total tuber yield of 338.61 q/ha with 61-90 g seed size planted at 60x20 cm plant spacing.
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    ThesisItemOpen Access
    Inheritance and molecular analysis for iron and zinc content in pearl millet [Pennisetum glaucum (L.) R. Br.]
    (CCSHAU, 2019) Anil Kumar; Khatri, R.S.
    Five crosses of pearl millet were evaluated to study the genetics of iron and zinc content, yield and its component traits. The present investigation was conducted to estimate additive, dominance and epistatic parameters, to develop the selection strategy for various traits in pearl millet. The present investigation was carried out during the period of kharif 2015, summer 2016 (ICRISAT, Patancheru) and kharif 2016 at Bajra Section, Chaudhary Charan Singh Haryana Agricultural University, Hisar, Haryana, India. The parental material has been selected on the basis of diverse range of grain iron and zinc content. The experimental material consisted of different generations viz., P1, P2, F1, F2, B1 and B2 of five crosses and were evaluated in compact family block design with three replications. Data were recorded on selected plants in for grain iron content, grain zinc content, yield and its contributing characters i.e. days to 50 per cent flowering, plant height, total tillers, productive tillers, panicle length, panicle girth and 200-grain weight. A wide range of variability was observed in the mean values of different traits among the parents and their different generations over the crosses. The average performance of backcross generations were higher than their respective parents for almost all traits indicated epistatic interactions may be involved in expressions of these traits. Both additive and dominance component of genetic variances had major role in inheritance for most of the traits over the crosses. Yield and most of the components depicted dominance effects, leads us to the conclusion that delayed selection will be effective strategy. Iron content was predominantly controlled by additive gene effects. The grain zinc content revealed that both additive and dominance components are equally important in the inheritance. High GCV and PCV were recorded for grain yield, total tillers per plant and effective tillers per plant indicated presence of high magnitude of variability. High to moderate values of GCV and PCV were recorded for grain iron content, zinc content and 200- seed weight. Low values of GCV and PCV with moderate to low broad sense heritability and genetic advance were recorded for days to 50% flowering, plant height, panicle length and panicle girth, indicating low scope of selection. High broad sense heritability for grain iron and zinc revealed that both grain Fe and Zn are highly heritable. A total of 70 SSR‟s were used for DNA polymorphism in the parents and hybrid which were monomorphic. Taking all together, the above findings advocate that genetic improvement of iron and zinc concentrations should be equitably effectual in pearl millet.