Title: STUDIES OF PRE-SOWING SEED TREATMENTS ON GERMINATION AND SEEDLING GROWTH OF GUAVA.
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Date
2022-09-02
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Publisher : Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
Abstract: An investigation pertaining to “Studies of pre-sowing seed treatments on germination and seedling growth of guava’’ was carried out at Fruit Nursery and Analytical laboratory, Department of Fruit Science, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during the year 2020-21 with objective, to study the effect of physical and chemical treatments on higher seed germination and seedling growth of guava and to find out the suitable pre-sowing physical and chemical treatment for higher seed germination and seedling growth of guava.
The experiment was laid out in Factorial Completely Randomized Design (FCRD) with two factors, as Factor ‘A’ constitutes physical treatment i.e. scrapping of seed coat with sand paper and without scrapping of seed coat with sand paper and Factor ‘B’ constitutes chemical treatment i.e. soaking seeds for 24 hrs in different chemical solutions of different concentrations viz.,GA3 @ 500 ppm, GA3 @ 1000 ppm, Thiourea @ 2000 ppm, Thiourea @ 4000 ppm and Tap water with ten treatment combinations and replicated thrice. The observations in respect of germination and growth parameters were recorded from the initial days of germination to periodically at 30 days interval up to 90 days after sowing.
The results of an investigation indicated that, germination and growth of guava significantly influenced by physical treatment i.e. scrapping of seed coat with sand paper and showed early germination and better response for germination percentage, vigour index, height of seedling, number of leaves per seedling, diameter of stem, length of shoot, length of root per seedling, fresh weight of shoot, root and seedling, dry weight of shoot, root and seedling, root: shoot ratio, absolute and relative growth rate and final survival percentage. With reference to different chemical treatments, soaking seeds in GA3 @ 1000 ppm recorded significantly best results over all the treatments for early germination, highest germination percentage, vigour index, height of seedling, number of leaves per seedling, diameter of stem, length of shoot, length of root per seedling, fresh weight of shoot, root and seedling, dry weight of shoot, root and seedling, root: shoot ratio, absolute and relative growth rate, and final survival percentage.
The interaction effect of physical and chemical treatments indicated that, guava seeds treated with treatment combination scrapping of seed coat with sand paper + soaking seeds in GA3 @ 1000 ppm for 24 hrs recorded significant performance for number of days to germinate, germination percentage and final survival percentage. While it showed non-significant effect regarding other germination and growth parameters.
The highest benefit: cost ratio was recorded in treatment combination of scrapping of seed coat with sand paper + soaking seeds in GA3 @ 1000 ppm.
Description
Description: The field experiment was carried out at Fruit Nursery and Analytical laboratory, Department of Fruit Science, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola (M.S.). The experiment was laid out in Factorial Completely Randomized Design (FCRD) with 10 treatment combinations comprising two physical treatments (Factor A) scrapping of seed coat with sand paper, without scrapping of seed coat with sand paper and five chemical treatments (Factor B) soaking seeds in gibberellic acid, soaking seeds in thiourea and soaking seeds in tap water for 24 hrs which were replicated three times. The observations in respect of germination and growth parameters were recorded periodically.
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Citation
Citation: CHAVAN, MINAKSHI VILAS. (2021). Studies of pre-sowing seed treatments on germination and seedling growth of guava. Department of Fruit Science, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2021. Print. xiv, 114p. (Unpublished).