GENETIC STUDIES IN A TROPICAL PINE - <em>PINUS</em> <em>KESIYA</em> I. INHERITANCE OF SOME ISOENZYMES AND LINKAGE AMONG ALLOZYME LOCI

Abstract

Up to 15 embryo-gametophyte pairs from each of 38 parent trees of Pinus kesiya Royle ex Gordon were assayed using starch gel electrophoresis and the staining pattern observed for 18 isoenzyme loci. For 14 of these loci, haploid megagametophyte genotypes were recorded allowing an analysis of single and multilocus segregation ratios. Results indicated that there were no significant deviations from the expected 1:1 ratio of haploid genotypes from heterozygotic parents at any locus. Thus, simple Mendelian inheritance can be assumed. Deviation from a 1:1:1:1 two-locus ratio of doubly heterozygous parents, indicating linkage, was detected for the locus pair 6PG-1 : 6PG-2.