[Construction of a genetic map and location of quantitative trait loci for yield component traits in maize by SSR markers]

D Q Xiang, H H Cao, Y G Cao, J P Yang, L J Huang, S C Wang, J R Dai
Yi Chuan Xue Bao, Acta Genetica Sinica 2001, 28 (8): 778-84
Using 230 F2:3 lines derived from the hybrid of ND3138, a SSR genetic linkage map of maize (Zea mays L.) was constructed on which 80 markers distribute among 10 linkage groups and spanning maize genome about 2033.4 cM with average distance between markers being 25.42 cM. The 230 F2:3 lines were grown in a random design of one-row plot with three replication, and evaluated for ear length, bared tip, ear diameter, row number, kernel number row-1, one thousand grains weight, ear weight and grain weight plant-1. With interval mapping procedure, 30 QTLs were revealed for all traits, which distributed on 9 of 10 chromosomes of maize except chromosome 6 and accounted for from 9.5% to 55.3% of the total phenotypic variation. Genetic effects and gene action were also determined.

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