Relationships between physiological traits, grain number and yield potential in a wheat DH population of large spike phenotype
Relationships between physiological traits, grain number and yield potential in a wheat DH population of large spike phenotype
复制标题
DOI：
10.1016/j.fcr.2014.05.015
复制
发表时间：
2014-08-01
影响因子：
5.8
通讯作者：
Foulkes, M. John
中科院分区：
文献类型：
--
作者：
Gaju, Oorbessy;Reynolds, Matthew P.;Foulkes, M. John
以CIMMYT春小麦（Triticum aestivum L.）具有大穗表型的高级系（LSP 2; + Tin 1分蘖抑制基因）和具有常规穗表型的英国冬小麦品种Rialto（R; -Tin 1）。田间试验进行了高辐射，灌溉条件下，在墨西哥西北部的两个季节。比较两组+Tin 1和-Tin 1 DH系，结果表明，+Tin 1基因的存在使穗分配指数（GS 61 + 5 d时的穗DM/地上DM; SPI）从0.32提高到0.34（+6.3%）（P
Our objective was to investigate the relationships between spike traits, grain number and yield potential and their physiological basis in a doubled-haploid (DH) population derived from a cross between a CIMMYT spring wheat (Triticum aestivum L.) advanced line of large-spike phenotype (LSP2; +Tin1 tiller inhibition gene) and the UK winter wheat cultivar Rialto (R; -Tin1) of conventional spike phenotype. Field experiments were carried out in high radiation, irrigated conditions in NW Mexico in two seasons. Comparing the two groups of +Tin1 and -Tin1 DH lines, results showed the presence of the +Tin1 gene for tiller inhibition increased spike partitioning index (spike DM/above-ground DM at GS61 + 5 d; SPI) from 0.32 to 034 (+6.3%) (P