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Inheritance of emergence time at low temperatures in segregating generations of maize

✍ Scribed by H. A. Eagles

Publisher
Springer
Year
1988
Tongue
English
Weight
568 KB
Volume
76
Category
Article
ISSN
0040-5752

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✦ Synopsis

North Carolina Design III and generation means analyses were used to study the inheritance of seedling emergence time and a related seedling growth parameter in crosses between 5-154, a line from CIMMYT Pool 5 with rapid seedling emergence under cool conditions, and two Corn Belt Dent lines of maize (Zea mays L.). The crosses were evaluated at low temperatures in controlled environment rooms. Additive genetic variances were larger than dominance variances in both crosses and estimates of the average levels of dominance were in the partial dominance range. Dominance was in the direction of rapid seedling emergence and rapid utilization of seed reserve. Estimates of minimum numbers of effective factors provided evidence for polygenic inheritance.

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