000			03335nab a22003857a 4500
999			_c59003 _d58995
001			59003
003			MX-TxCIM
005			20231009164119.0
008			180105s2017 wiu|||p|sp||| 00| 0 eng d
024	8		_ahttps://doi.org/10.2135/cropsci2016.05.0362
040			_aMX-TxCIM
041			_aeng
100	0		_93034 _aFengmei Gao
245	1		_aGenetic progress in grain yield and physiological traits in Chinese wheat cultivars of Southern Yellow and Huai Valley since 1950
260			_aMadison, Wisconsin : _bCSSA, _c2017.
500			_aPeer review
520			_aUnderstanding the key characteristics associated with genetic gains achieved through breeding is essential for improving yield-limiting factors and designing future breeding strategies in bread wheat (Triticum aestivum L.) cultivars. The objective of the present study was to investigate the genetic progress in yield-related and physiological traits in cultivars released from 1950 to 2012 for irrigated conditions in the southern Yellow and Huai Valleys Winter Wheat Zone. Field trials including 26 leading cultivars from 1950 to the present time were conducted at Zhengzhou and Zhoukou in Henan Province, during the 2013-2014 and 2014-2015 cropping seasons, providing data from four environments. Grain yield (GY) was significantly increased by the linear rate of 57.5 kg ha−1 yr−1 or 0.70% (R2 = 0.66, P < 0.01) and significantly correlated with increased thousand-kernel weight (TKW) (r = 0.48, P < 0.05), spike number m−2 (r = 0.44, P < 0.05), kernels m−2 (r = 0.56, P < 0.01), aboveground biomass (AGBM) (r = 0.80, P < 0.01), harvest index (HI) (r = 0.84, P < 0.01), water-soluble carbohydrate at 10 d postanthesis (WSC-10) (r = 0.80, P < 0.01), and reduced plant height (PH) (r = −0.85, P < 0.01). There was no significant change in kernel number per spike, heading date, normalized difference in vegetation index at anthesis and at 10 d postanthesis, leaf area index at anthesis and at 10 d postanthesis, and canopy temperature depression at anthesis during the past 60 yr. Soil plant analysis development (SPAD) estimates of chlorophyll content at 10 d postanthesis (Chl-10) increased with year of release and were significantly correlated with GY (r = 0.69, P < 0.01), PH (r = −0.76, P < 0.01), AGBM (r = 0.52, P < 0.01), HI (r = 0.71, P < 0.01), and WSC-10 (r = 0.73, P < 0.01). Cultivars conferring Rht-D1b and Rht-D1b + Rht8c showed increased GY, TKW, AGBM, HI, WSC-10, and Chl-10. Stem water solubility content can be used as a selection criterion for further improving yield potential.
526			_aWC
546			_aText in English
650		7	_aWheat _gAGROVOC _2 _91310
650		7	_aGenetic resources _gAGROVOC _2 _91127
650		7	_94285 _aPhysiological adaptation _2AGROVOC
650		7	_94709 _aYield increases _2AGROVOC
700	0		_95885 _aDongyun Ma
700	0		_93036 _aGuihong Yin
700	1		_aAwais Rasheed _gGlobal Wheat Program _8I1706474 _91938
700	0		_95886 _aYan Dong
700	0		_91687 _aYonggui Xiao
700	0		_9377 _aXianchun Xia
700	0		_93037 _aXiaoxia Wu
700	1		_aHe Zhonghu _gGlobal Wheat Program _8INT2411 _9838
773	0		_gv. 57 no. 2, p. 760-773 _tCrop Science _wu444244
856	4		_uhttp://libcatalog.cimmyt.org/download/cis/59003.pdf _yAccess only for CIMMYT Staff
942			_2ddc _cJA _n0