INTROGRESSIONS FROM LYCOPERSICON PENNELLII CAN IMPROVE THE SOLUBLE SOLIDS YIELD OF TOMATO HYBRIDS

被引：98

作者：

ESHED, Y ^{[1
]}

ZAMIR, D ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM,FAC AGR,DEPT FIELD & VEGETABLE CROPS,IL-76100 REHOVOT,ISRAEL

来源：

THEORETICAL AND APPLIED GENETICS | 1994年 / 88卷 / 6-7期

关键词：

WILD GERMPLASM; RFLP MAPPING; YIELD; SOLUBLE-SOLIDS CONTENT; HETEROSIS;

D O I：

10.1007/BF01254002

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

RFLP-defined chromosome segments covering the entire tomato genome were introgressed from the wild green-fruited species Lycopersicon pennellii into the cultivated tomato (L. esculentum cv M82; Eshed et al. 1992). Six L. pennellii chromosome segments were selected for a detailed evaluation based on previous observations of their effects on the two yield components, fresh tomato yield and total soluble-solids content (Brix). Differences in the quantitative traits measured between M82 and the introgression lines, or their hybrids with different inbred parents, can be attributed to the alien chromosome segments. Replicated field trials, grown at wide and dense spacing, identified three quantitative trait loci (QTLs) for soluble-solids content on chromosomes 1, 5 and 7. In plants heterozygous for the chromosome-5 locus there was a 50% increase in soluble-solids yield in wide but not in dense spacing. Plants heterozygous for the chromosome-1 QTL/s were tested over a 2-year period, in three genetic backgrounds, and showed a significant 16% elevation in soluble-solids yield only in dense spacing. These results demonstrate that wild tomato germplasm can be used to improve the yield of the cultivated crop.

引用

页码：891 / 897

页数：7

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