Progress in hybrid wheat research in Sichuan and future prospects

Luo, Jiangtao; Liu, Zhongqi; Ren, Yang; Teishima, Jun; Xiao, Ziquan; Rao, Shida; Tian, Niu; Zheng, Jinhai; Liu, Peixun; Deng, Qingyan; Li, Shengrong; Pu, Zhien

doi:10.1360/tb-2022-0334

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…The resistance to PHS of these varieties is generally better than that of the varieties grown in the Huang–Huai and northern winter wheat regions. In the southwest winter wheat region, PHS-resistant varieties include Wanxianbaimaizi, Yongchuanbaimaizi, Fulingxuxumai, Chuanmai 11, Yonggang 2, Guimai 2, Mian 79-2, Chuanyu 26, Chuannong 16, Nanmai 991, and Mianmai 43 [ 7 , 59 , 60 ]. The varieties with high PHS resistance in the middle and lower Yangtze River winter wheat region include Dahuangpi, Jinda 2905, Ningmai 8, Ningmai 26, Yangmai 10, Yangmai 20, Yangmai 24, and Zhenmai 10 [ 7 , 61 ].…”

Section: Progress In Breeding Phs-resistant Wheat In Chinamentioning

confidence: 99%

Genetic Improvement of Wheat with Pre-Harvest Sprouting Resistance in China

Chang

Zhang

et al. 2023

Genes

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Wheat pre-harvest sprouting (PHS) refers to the germination of seeds directly on the spike due to rainy weather before harvest, which often results in yield reduction, quality deterioration, and seed value loss. In this study, we reviewed the research progress in the quantitative trait loci (QTL) detection and gene excavation related to PHS resistance in wheat. Simultaneously, the identification and creation of germplasm resources and the breeding of wheat with PHS resistance were expounded in this study. Furthermore, we also discussed the prospect of molecular breeding during genetic improvement of PHS-resistant wheat.

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Section: Progress In Breeding Phs-resistant Wheat In Chinamentioning

confidence: 99%

Genetic Improvement of Wheat with Pre-Harvest Sprouting Resistance in China

Chang

Zhang

et al. 2023

Genes

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“…Hybrid wheat produced over 20% more yield than inbred cultivars in saline and rainfed elds [6,9,10]. Several systems have been established to exploit heterosis in wheat since the 1960s, such as the three-line system based on cytoplasmic male sterility (CMS) [11][12][13][14], two-line systems based on chemical hybridization agents (CHAs) [15][16][17], photoperiod-sensitive cytoplasmic male sterility (PCMS) [18][19][20] and XYZ-4Ems [9,[21][22][23]. In China, another two-line hybrid wheat system using thermo-photo sensitive genic male sterility (TPSGMS) was created in 1992 [6,9, [24][25][26], it has released 22 hybrid cultivars, meanwhile, CHA, XYZ-4E-ms and CMS systems also released ve, four and one cultivars, respectively (http://www.c-seed.cn).…”

Section: Introductionmentioning

confidence: 99%

Stigma and glume characteristics synergistically determine the stigma exsertion rate in thermo-photo sensitive genic male sterile wheat

Li,

Yang,

et al. 2024

Preprint

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Background: Wheat hybrids have been widely demonstrated to have remarkable heterosis or hybrid vigor in increasing yield potential and stability since the 1960s. However, commercial application of hybrid wheat is still hindered by higher seed costs mostly resulting from lower yield in hybrid seed production. Stigma exsertion has been verified as a decisive factor in increasing rice's hybrid seed yield but has been nearly ignored in hybrid wheat breeding and seed production. Results: In this study, four thermo-photo sensitive genic male sterile lines K41S, K64S, K66S and K68S with different stigma exsertion rate (SER) were used to compare their differences in floral architecture relative to stigma exsertion over two growing seasons. K41S and K64S exhibited relatively higher SER at 21.87% and 22.81%, respectively. No exserted stigma was observed in K66S, and K68S had only 0.82% SER. The study found that stigma length, glume width and the length-width ratio of the glume were significantly correlated with SER, with the correlation coefficients of 0.46, -0.46 and 0.60, respectively. Other stigma features such as branch angle, stretch width and hairbrush length, as well as glume length, also had a weakly positive correlation with SER (r = 0.09-0.27). For K41S and K64S, the SER was significantly affected by the differences in stigma branch angle and stigma stretch width among florets. A cross-pollination survey showed that the outcrossing ability of florets with exserted stigma was about 3 times as many as that of florets with non-exserted stigma. As a result, the stigma exserted florets that accounted for 21.87% and 22.81% of the total florets in K41S and K64S, produced 46.80% and 48.53% of the total cross-pollinated seeds in both sterile lines. Conclusions: These findings suggest that the SER in wheat sterile line is synergistically determined by specific stigma and glume characteristics. Longer stigma combined with slender glume appears to be the basic floral feature of stigma exsertion. It is expected that breeding and utilizing sterile lines with higher SER would be a promising solution to cost-effective hybrid wheat seed production.

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Hybrid wheat: The road is long and treacherous, we keep on going and will accomplish it in the end

Deng¹

2022

Chin. Sci. Bull.

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Progress in hybrid wheat research in Sichuan and future prospects

Cited by 3 publications

References 14 publications

Genetic Improvement of Wheat with Pre-Harvest Sprouting Resistance in China

Genetic Improvement of Wheat with Pre-Harvest Sprouting Resistance in China

Stigma and glume characteristics synergistically determine the stigma exsertion rate in thermo-photo sensitive genic male sterile wheat

Hybrid wheat: The road is long and treacherous, we keep on going and will accomplish it in the end

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