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Theses

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1963 - 19646
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Subject: Agriculture × Author: KAU × End date: 1964 ×
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Now showing 1 - 6 of 6
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    ThesisItemOpen Access
    Studies on the effect of growth regulators on germination, growth and oil content in Sesame (Sesamum indicum-L)
    (Division of Agricultural Botany, Agricultural College & Research Institute, Vellayani, 1963) Santha Kumari, S; KAU; Kumara Pillai, P
    An experiment was conducted at the Agricultural College and Research Institute, Vellayani during 1962-63, to study the effect of three growth regulators NAA, GA and 2, 4-D on germination, growth and oil content of Sesamum indicum. NAA, GA and 2, 4-D at three different levels 0, 15, 30; 0, 25, 50; and 0, 2, 5 ppm. respectively, were tried for the present study . The three different stages of application were seed, seedling and at the time of flowering . The experiment was conducted as pot-culture in randomised block design with 5 replications and 27 treatment in factorial combinations. Observations on germination percentage, height of plants, number of branches and nodes, fresh weight of stem, number of flowers and fruits, percentage of fruit setting, yield and oil contents of seeds were recorded and the data statistically analysed.
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    ThesisItemOpen Access
    Studies on the effect of gibberellic acid on the growth and yield in rice (Oryza sativa, L)
    (Division of Agricultural Botany, Agricultural College & Research Institute, Vellayani, 1964) Sathya Das, E; KAU; Kumara Pillai, P
    The present investigation is undertaken to study the effects of gibberellic acid on the cereal, rice (Oryza sativa. L). The hormone was used at concentrations of 25,50,75, 100 and 125 ppm., as spray application on the 21 days old seedlings. Three stages of applications namely spraying once in a week , once in two weeks and once in three weeks were tried. A pot culture experiment was conducted adopting a randomised block design. The effect of gibberellic acid on the height of plants, number of tillers, time of flowering, fresh and dry weight of stem, length of the ear heads, number of leaves , dry weight of the roots and the yield were studied. Of these only height of the plants was influenced significantly by the treatments. Marked shoot elongation was observed in the gibberellic acid treated plants. The maximum response was at the level of 100 ppm. Weekly spraying is better than spraying once in two weeks and once in three weeks.
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    ThesisItemOpen Access
    Studies on the effect of growth regulators on sex expressions and sex ratio in Bitter gourd (Momordica charantia L.)
    (Division of Agricultural Botany, Agricultural College and Research Institute, Vellayani, 1964) Raveendran, P S; KAU; Kumara Pillai, P
    An experiment was conducted to study the effect of four growth regulators in Momordica charantia with special reference to sex expression and sex ratio. The four growth regulators tried were TIBA (300, 400, 500 and 600 ppm), NAA (200, 300, 400 and 500 ppm) and 2, 4-D (4, 6, 8 and 10 ppm). The treatment was given one week after germination . The experiment was conducted as pot culture in randomised block design with four replications and eighteen treatments. Observations on the height of the main stem and of the plant including branches, number of nodes and branches in the main stem, fresh weight of plants, leaf deformities, number of male and female flowers and fruits , weight of the fruits and number of seeds per fruit were recorded and the data collected were statistically analysed. The sex ratio was determined by comparing the number of male and female flowers produced in various traetments. The percentage of fruit set was also studied. The time of flowering and the variation in the size of the male flower were also noticed in the course of the study.
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    ThesisItemOpen Access
    Studies on the induced polyploids of cluster beans (Cyamopsis P soralioides D. C.)
    (Division of Agricultural Botany, Agricultural Botany, Agricultural College & Research Institute, Vellayani, 1964) Thankamma Pillai, P K; KAU; Kumara Pillai, P
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    ThesisItemOpen Access
    Studies on the formulation of selection index for yield in rice (Oryza sativa, L)
    (Division of Agricultural Botany, Agricultural College and Research Institute, Vellayani, 1964) Varkey, P A; KAU; Kumara Pillai, P
    With a view to formulating a suitable selection index for grain yield using the discriminant function technique and to testing its efficiency over direct selection, twenty established paddy varieties of Kerala were studied for their yield and associated characters. The analysis of variance showed that these varieties differed significantly in the characters, namely, grain yield , plant height, number of ear bearing tillers, length of primary ear, weight of primary ear, number of grains per primary ear, yield of straw and 1000-grain weight.
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    ThesisItemOpen Access
    Studies on the effect of growth regulators in Amaranthus (Amaranthus gangeticus, L.)
    (Division of Agricultural Botany, Agricultural College and Research Institute, Vellayani, 1963) Philip Zachariah, K; KAU; Kumarapillai, P
    The present work was undertaken to study the effects of gibberellic acid, indole acetic acid and indole butyric acid on the vegetable crop, amaranthus (Amaranthus gangeticus L.). Three methods of treatment viz. seed treatment (soaking for 2 hours); seed treatment followed by one foliar spray on the 20th day, and two foliar sprays on 20th and 35th days were tried. All the hormones were used at concentrations of 10, 20 and 30 ppm. A pot culture experiment was conducted for the purpose, adopting a randomised block design.