Correlation between vigour tests and field emergence in cotton
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Authors
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P.Y. SHINDE
Division of Seed Science and Technology, IARI, New Delhi 110 012
Author
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MALAVIKA DADLANI
Division of Seed Science and Technology, IARI, New Delhi 110 012
Author
Keywords:
Vigour test, field emergence, brick-gravel test, correlation, cottonAbstract
Considering that cotton hybrids are grown in a wide range of agro-ecological conditions, both rainfed and irrigated, it is important that the hybrid seeds should not only meet the minimum standards of germination, but exhibit high planting value (vigour) to ensure a successful field emergence and stand establishment. This can be achieved by providing high vigour seeds. Vigour assessment studies conducted in 21 commercial seed lots of hybrids and varieties of cotton showed significant differences in the lots for different physical, physiological and performance based vigour tests. The speed of germination, 100-seed weight and electrical conductance of seed leachates were found to be very good indicators of the planting value of seed lots. The germination in sand medium and brick-gravel test showed a positive correlation with field emergence in six months stored seeds.
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References
1. MC DONALD MB (1980). Assesement of seed quality. Hort Science 15: 784-88
2. BENNETT M (2002). Saturated salt accelerated ageing (SSAA) and other vigour tests for vegetable seeds. In: Mc Donald M and Contreras S (eds) Proc Intl Seed Seminar: Trade, Production and Technology. Pontificia Universidad Catolica de Chile, Facultad de Agronomia e Ingenieria Forestal, Departmento de Ciencias Vegetables. October 15-16, 2002, Santiago-Chile pp 188-93
3. ANONYMOUS (2011). International Rules for Seed Testing. ISTA Secretariat, Zurich, CH-Switzerland
4. WANJURA DF (1981) Germination and stand establishment. Proc Beltwide Cotton Prod Res Conf 1981 pp 321
5. HOFMANN WC, KITTOCK DL AND ALEMAYEKU M (1988). Planting seed density in relation to cotton emergence and yield. Agron / 80: 834-36
6. DELOUCHE JC (1972). Harvesting, handling and storage of soybean seed. Short course for Seeds men 15: 17-22
7. VERMA SS, MEHHA AS, VERMA U AND LATHER BPS (1989). A note on the comparative germination and seed vigour of different cotton genotypes. J Cotton Res & Dev 3(1): 100-02
8. DELOUCHE JC AND BASKIN CC (1973). Accelerated ageing technique for predicting the relative storability of seed lots. Seed Sci Technol 1: 427-52.
