Reference "Identification and interaction analysis of six agronomic trait loci of rice based on a recombinant inbred population"

Reference ID

7920

Title

Identification and interaction analysis of six agronomic trait loci of rice based on a recombinant inbred population

Source

Acta. Bot. Sinica, 1999, vol. 41, pp. 1199-1203

Authors (5)

Li-J-Z	Zheng-X-W
Zhu-L-H	He-P
Lu-R-L

Abstract

A recombinant inbred line (RIL) population including 107 stable lines was
obtained from a cross between an indica variety ZYQ8 and a japonica variety JX17
of rice (Oryza sativa L.) through successive selfing up to 9 generations. The
quantitative trait loci (QTLs) responsible for six agronomic traits (days to
heading, plant height, number of spikelets per panicle, number of grains per
panicle, 200-grain weight, seed set percentage) were surveyed and analyzed based
on the molecular linkage map constructed from this RIL population. All six
traits displayed continuous distribution in the RIL population. For days to
heading, two QTLs were identified on chromosomes 8 and 12, of which, qHD-8 was a
major gene located on chromosome 8. For plant height, two QTLs were identified
on chromosome 1 and 4, of which qPH-1 was a major gene located on chromosome 1.
Meanwhile, interaction analysis between these QTLs affecting rice productivity
was carried out, and the results showed that there were a total of 24 coadaptive
interactions affecting days to heading, plant height, number of spikelets per
panicle, number of grains per panicle and seed set percentage, explaining 6.2%
apprx 10.9% variation respectively.