Wild Species In Crop Improvement

Moss, J P (1984) Wild Species In Crop Improvement. In: Biotechnology in international agricultural research: proceedings of the Inter-Center Seminar on International Agricultural Research Centers (IARCs) and Biotechnology, 23-27 April 1984, Manila, Philippines.

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Wild relatives are useful sources of characters denired to improve crop. Many of these apecies are resistant to pests and diseases or adapted to adverse environmente. Some have higher yields than their cultivated relatives. Genes from some vild relative. can undergo meiotic recombinatlnn. producing segregante from which the plant breeder can select improved type*: rhese gencfi can usunl ly function ef fertively in cultivars. The limit to utilization of vild relatives depends on the breeder's ability to produce hybrida. but hybrids may be sterile. Ploidy differences between crops nnd vild relatives are frequent, but manipulatins ploidy level can improve gene transfer. Triploids are often sterile. but progeny from triploids lnclude recombinants that may not occur at other ploidy levels. The Croundnut Cytogenetics Unit at ICRISAT ha6 transferred desirable genes from diploid vild specie. into tatraplnid liner crossable vith groundnot. cnabling breeders to incorporate vild species genes into locally adapted material. Triploids, hexaploidm. amphiploids and autotetraploids have been produced and backcrossed vith the cultivated groundnut. Some line8 have disease resistance and good agronomic traits, including high seed yield. and have been entered in A11 India Coordinated Oilfieedfi Project trials.

Item Type: Conference or Workshop Item (Paper)
Subjects: Others > Agriculture-Farming, Production, Technology, Economics
Depositing User: Library ICRISAT
Date Deposited: 13 Dec 2011 13:36
Last Modified: 13 Dec 2011 13:36
URI: http://oar.icrisat.org/id/eprint/4141
Acknowledgement: UNSPECIFIED
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