| 000 | 03003nab a22004217a 4500 | ||
|---|---|---|---|
| 001 | G98978 | ||
| 003 | MX-TxCIM | ||
| 005 | 20240919020947.0 | ||
| 008 | 121211b |||p||p||||||| |z||| | | ||
| 022 | 0 | _a0378-4290 | |
| 024 | 8 | _ahttps://doi.org/10.1016/j.fcr.2014.05.015 | |
| 040 | _aMX-TxCIM | ||
| 090 | _aCIS-7618 | ||
| 100 | 1 | _aGaju, O. | |
| 245 | 0 | 0 | _aRelationships between physiological traits, grain number and yield potential in a wheat DH population of large spike phenotype |
| 260 | _c2014 | ||
| 500 | _aPeer-review: Yes - Open Access: Yes|http://ip-science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0378-4290 | ||
| 520 | _aOur 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 0.34 (+6.3%) (P < 0.01) and grains spike−1 by 5.1 (+13.9%) (P < 0.001), but reduced spikes m−2 by 20.7 (−5.7%) (P < 0.01). Overall a significant increase in grains m−2 of 865 (+6.6%) was observed in +Tin1 DH lines compared to −Tin1 DH lines (P < 0.05), but the effect on grain yield was not statistically significant. Above-grouund biomass at anthesis was not significantly affected by the presence/absence of the Tin1 gene; although results indicated the presence of the Tin1 gene increased photosynthetically active radiation interception from onset of stem elongation to anthesis, but decreased radiation-use efficiency during this phase. Our results indicated that introgressing the +Tin1 gene into modern wheat germplasm may offer scope to increase grains spike−1 and grains m−2 in irrigated, high radiation environments. | ||
| 536 | _aGlobal Wheat Program|Genetic Resources Program | ||
| 546 | _aEnglish | ||
| 591 | _aElsevier|CIMMYT Informa No. 1893 | ||
| 593 | _aLucia Segura | ||
| 594 | _aINT1511|CCJL01 | ||
| 595 | _aCSC | ||
| 650 | 1 | 0 | _aAssimilate partitioning |
| 650 | 1 | 0 | _aAWNS |
| 650 | 1 | 0 | _aSpike fertility |
| 650 | 1 | 0 | _aTillerinhibition |
| 650 | 1 | 0 | _aWheat breeding |
| 700 | 1 |
_aFoulkes, M.J., _ecoaut. _91823 |
|
| 700 | 1 |
_aMayes, S., _ecoaut. |
|
| 700 | 1 |
_aRibas-Vargas, G., _ecoaut. |
|
| 700 | 1 |
_aSparkes,D.L., _ecoaut. |
|
| 700 | 1 |
_aReynolds, M.P. _gGlobal Wheat Program _8INT1511 _9831 |
|
| 700 | 1 |
_aCrossa, J. _gGenetic Resources Program _8CCJL01 _959 |
|
| 773 | 0 |
_tField Crops Research _gv. 164, p. 126?135 |
|
| 942 | _cJA | ||
| 999 |
_c30557 _d30557 |
||