Maintenance of, and requests for, maize germplasm having resistance to insect pests
1997
Wilson, R.L.
There are 33,766 maize accessions in the US National Plant Germplasm System (NPGS). Just over 13,000 are in the active collection maintained at the North Central Regional Plant Introduction Station at Ames, IA, USA. Through extensive evaluation, many of these accessions have been identified as containing genes for host-plant resistance to several maize insect pests. This presentation provides a general discussion of how the insect-resistant maize germplasm is regenerated and stored. Accessions from low latitudes present problems for seed regeneration in Iowa because of their photoperiod sensitivity. An increased frequency of requests for insect resistant germplasm usually follows the publication of evaluation results. These requests for seed are documented in the NPGS's Germplasm Resources Information Network (GRIN). Illustrations of the number of requests for insect resistant germplasm are presented. Requests, both foreign and domestic, originate mostly from private companies and public institutions. Researchers are asked at the time of seed request to provide the maize curator with a performance report of their evaluation results.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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