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Biometrical Studies of Inbred Lines and Their Hybrids

出版	University of Birmingham, 1986
URL	http://books.google.com.hk/books?id=bFjIZwEACAAJ&hl=&source=gbs_api

註釋This thesis divided into two parts. In the first part a method for predicting the properties of second cycle hybrids produced by pairwise or diallel crossing of the first cycle recombinant inbred lines is described. Family means and variances of the P1, P2, and F1 and F2 generations of cross are all that is required for making these predictions. The predictions have been tested on two crosses derived from four varieties of Nicotiana rustica , viz. v1 xV5 cross and v2 xV12 cross. The data, results and discussions involving the v1 xv5 cross are presented in three publications annexed as appendices, A,B and C at the end of the thesis. Results of the experiments conducted on the v2 xv12 cross are discussed in detail in this part of the thesis. The data collectedfrom the basic generations (P1, P2, F1, F2, B1 and B2) of the V2 xV12 cross raised in three environments were used for making the predictions and the f1 families of a 30x30 diallel produced from a random sample of first cycle inbred lines were utilized for testing their practical applicability. The main conclusion to emerge from the analyses and results is that the prediction procedures are reasonably robust. At first sight linkage disequilibrium, nom-allelic interaction and genotype x environment interaction...