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Cytogenetics and reproductive biology of some Bele (Abelmoschus manihot Linn. Medic., subspecies manihot) cultivars

Tyagi, Anand P. (2002) Cytogenetics and reproductive biology of some Bele (Abelmoschus manihot Linn. Medic., subspecies manihot) cultivars. The South Pacific Journal of Natural Sciences, 20 (1). pp. 4-8. ISSN 1013-9877

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Abstract

Four locally grown (from Fiji Islands) and three imported (from Papua New Guinea), a total of seven BELE (Abelmoschus manihot Linn., Medic sub-species manihot) cultivars were investigated for their cytogenetics and reproductive biology. Chromosome counting from flower buds and root tips showed that chromosome number in all the seven cultivars does not exceed 2n=66. Pollen viability in all the seven cultivars was high, exceeding 85% from pollen staining technique and 78% from pollen germination technique. All the seven Bele cultivars were fully self-compatible. Cross-compatibility among four local cultivars and three cultivars from Papua New Guinea was very high. However cross compatibility between local (Fijian) cultivars and cultivars from Papua New Guinea was partial indicating some degree of genetic difference between cultivars from two countries. This could be due to differences in compatibility alleles between cultivars from Fiji and Papua New Guinea. Procedures such as cutting the style shorter and placing pollen grains to enhance and affect fertilisation to get cross seed were suggested.

Item Type: Journal Article
Subjects: Q Science > QH Natural history > QH301 Biology
Divisions: Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences
Depositing User: Ms Neha Harakh
Date Deposited: 17 Nov 2002 13:18
Last Modified: 18 Jul 2012 21:05
URI: http://repository.usp.ac.fj/id/eprint/2711
UNSPECIFIED

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