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Effects of Some Seed Treatments on Germination, Growth and Polyembryony of Mango (Mangifera indica L.) /

by Nawal Magzoub Abdalla; University of Khartoum Faculty of Agriculture -- Horticulture Dept..
Type: materialTypeLabelBookPublisher: 1996Description: ii, 88 P. : ill. ; 23 cm.Subject(s): Mango -- Sudan | Mangoes -- Sudan | Mangifera indica -- Sudan | Mango -- Seed Treatments -- Sudan | Mango -- Germination -- Sudan | Mango -- Growth -- Sudan | Mango -- Polyembryony -- Sudan | HorticultureDissertation note: M. Sc. 1996 Summary: Five experiments were carried-out under nursery condition to investigate the influence of decortications of seed stones, stage of fruit development from which seeds were extracted, seed storage, seed weight (size) and seed orientaion on germination, growth characteristic and polyembryony of mango. The results of first experiment indicated that decortications seeds took fewer days to germinate and resulted in greater values of germination percentage and growth characteristics in term of height, stem diameter, number of leaves, length and diameter of root and number of seedlings produced per seed (polyembryony) compared to undecorticated (intact) seeds, regardless of mango cultivar tested. In the second experiment, the results showed that seeds obtained from ripe and overripe fruits took significantly fewer days for germination and gave significantly greater values of germination percentages and growth parameters compared to seeds obtained from green fruits. The results also showed that significantly greater number of seedlings produced per seed was associated with decorticated seeds, regardless of the stage of fruit development. In the third experiment, the results demonstrated that, sowing seeds immediately or after a week from extraction took fewer days for germination and gave greater values of germination percentages and growth parameters than sowing seeds after two, four or six weeks from extraction. Seeds which were sown after twelve weeks failed to In the fourth experiment, the results revealed that seed weight had no significant effect on number of days required for germination and germination percentages. However, greater values of germination percentages were associated with large seeds compared to small seeds. Significantly greater values of growth parameters and greater number of seedlings produced per seed were associated with large seeds compared to small seeds. In the fifth experiment the results indicated that seeds sown with their convex sides down took significantly more days to germinate compared to seeds sown flat or with their convex sides up. Seed orientation had no significant effect on germination percentages. However, higher values were associated with seeds which were sown flat or with their convex sides up. Significantly greater values of growth parameters were associated with seeds which were sown flat compared to the other two methods of seed orientation. Sowing seeds flat or with their convex sides up resulted in significantly greater number of seedlings per seed.
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Thesis & Dissertation Thesis & Dissertation
مكتبة مجمع شمبات
Hort N-2 (Browse shelf) Available sht1449

A thesis submitted in partial fulfillment of the requirement for the degree of Master of Science (Agric.).

M. Sc. 1996

Includes bibliographical references

Five experiments were carried-out under nursery condition to investigate the influence of decortications of seed stones, stage of fruit development from which seeds were extracted, seed storage, seed weight (size) and seed orientaion on germination, growth characteristic and polyembryony of mango. The results of first experiment indicated that decortications seeds took fewer days to germinate and resulted in greater values of germination percentage and growth characteristics in term of height, stem diameter, number of leaves, length and diameter of root and number of seedlings produced per seed (polyembryony) compared to undecorticated (intact) seeds, regardless of mango cultivar tested. In the second experiment, the results showed that seeds obtained from ripe and overripe fruits took significantly fewer days for germination and gave significantly greater values of germination percentages and growth parameters compared to seeds obtained from green fruits. The results also showed that significantly greater number of seedlings produced per seed was associated with decorticated seeds, regardless of the stage of fruit development. In the third experiment, the results demonstrated that, sowing seeds immediately or after a week from extraction took fewer days for germination and gave greater values of germination percentages and growth parameters than sowing seeds after two, four or six weeks from extraction. Seeds which were sown after twelve weeks failed to In the fourth experiment, the results revealed that seed weight had no significant effect on number of days required for germination and germination percentages. However, greater values of germination percentages were associated with large seeds compared to small seeds. Significantly greater values of growth parameters and greater number of seedlings produced per seed were associated with large seeds compared to small seeds. In the fifth experiment the results indicated that seeds sown with their convex sides down took significantly more days to germinate compared to seeds sown flat or with their convex sides up. Seed orientation had no significant effect on germination percentages. However, higher values were associated with seeds which were sown flat or with their convex sides up. Significantly greater values of growth parameters were associated with seeds which were sown flat compared to the other two methods of seed orientation. Sowing seeds flat or with their convex sides up resulted in significantly greater number of seedlings per seed.

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