Knowledge Center Catalog

Response to eight cycles of reciprocal recurrent selection in Kitale Synthetic 2, Ecuador 573 and their variety cross [Zea mays L. in Kenya]

By: Contributor(s): Material type: ArticleArticleLanguage: En Publication details: 1992ISSN:
  • 0394-9257
Other title:
  • Risposta a otto cicli di selezione ricorrente reciproca in Kitale Synthetic 2, Ecuador 573 e loro incrocio varietale [Zea mays L. in Kenya]
Subject(s): DDC classification:
  • 93-095228
 In: Journal of Genetics and Breeding v. 46, no. 4, p. 315-32093-095228Summary: Two maize (Zea mays L.) populations, Kitale Synthetic II and Ecuador 573, have undergone eight cycles of reciprocal recurrent selection at 10% selection intensity with grain yield as the major selection criterion. A study was conducted in the years 1983, 1984 and 1986 at several environments in Western Kenya to evaluate direct and indirect responses to selection in the two populations and their variety cross. Neither of the populations responded to selection for yield, but their variety cross was improved at a rate of 3.56% per cycle. Percent mid-parent heterosis for yield showed a significant linear increase (b = 3.804), presenting opportunity for further
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Holdings
Item type Current library Collection Call number Copy number Status Date due Barcode Item holds
Article CIMMYT Knowledge Center: John Woolston Library AGRIS Collection 93-095228 (Browse shelf(Opens below)) 1 Available 93-095228
Total holds: 0

2 tables; 21 ref. Summary (En)

Peer-review: No - Open Access: No

Two maize (Zea mays L.) populations, Kitale Synthetic II and Ecuador 573, have undergone eight cycles of reciprocal recurrent selection at 10% selection intensity with grain yield as the major selection criterion. A study was conducted in the years 1983, 1984 and 1986 at several environments in Western Kenya to evaluate direct and indirect responses to selection in the two populations and their variety cross. Neither of the populations responded to selection for yield, but their variety cross was improved at a rate of 3.56% per cycle. Percent mid-parent heterosis for yield showed a significant linear increase (b = 3.804), presenting opportunity for further

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