Search Result

Journals

Publication Years

Keywords

Please wait a minute...

For Selected:

Download Citations
EndNote Ris BibTeX

Toggle Thumbnails

Select

Night warming increases wheat yield by improving pre-anthesis plant growth and post-anthesis grain starch biosynthesis

Yonghui Fan, Boya Qin, Jinhao Yang, Liangliang Ma, Guoji Cui, Wei He, Yu Tang, Wenjing Zhang, Shangyu Ma, Chuanxi Ma, Zhenglai Huang

2024, 23 (2): 536-550. DOI: 10.1016/j.jia.2023.06.024

Abstract （221） PDF in ScienceDirect

Global climate change is characterized by asymmetric warming, i.e., greater temperature increases in winter, spring, and nighttime than in summer, autumn, and daytime. Field experiments were conducted using four wheat cultivars, namely ‘Yangmai 18’ (YM18), ‘Sumai 188’ (SM188), ‘Yannong 19’ (YN19), and ‘Annong 0711’ (AN0711), in the two growing seasons of 2019–2020 and 2020–2021, with passive night warming during different periods in the early growth stage. The treatments were night warming during the tillering–jointing (NW_T–J), jointing–booting (NW_J–B), and booting–anthesis (NW_B–A) stages, with ambient temperature (NN) as the control. The effects of night warming during different stages on wheat yield formation were investigated by determining the characteristics of dry matter accumulation and translocation, as well as sucrose and starch accumulation in wheat grains. The wheat yields of all four cultivars were significantly higher in NW_T–J than in NN in the 2-year experiment. The yield increases of semi-winter cultivars YN19 and AN0711 were greater than those of spring cultivars YM18 and SM188. Treatment NW_T–J increased wheat yield mainly by increasing the 1,000-grain weight and the number of fertile spikelets, and it increased dry matter accumulation in various organs of wheat at the anthesis and maturity stages by increasing the growth rate at the vegetative growth stage. The flag leaf and spike showed the largest increases in dry matter accumulation. NW_T–J also increased the grain sucrose and starch contents in the early and middle grain-filling stages, promoting yield formation. Overall, night warming between the tillering and jointing stages increased the pre-anthesis growth rate, and thus, wheat dry matter production, which contributed to an increase in wheat yield.

Reference | Related Articles | Metrics

Select

Identification of candidate genes for early-maturity traits by combining BSA-seq and QTL mapping in upland cotton (Gossypium hirsutum L.)

Liang Ma, Tingli Hu, Meng Kang, Xiaokang Fu, Pengyun Chen, Fei Wei, Hongliang Jian, Xiaoyan Lü, Meng Zhang, Yonglin Yang

2024, 23 (10): 3472-3486. DOI: 10.1016/j.jia.2024.04.024

Abstract （98） PDF in ScienceDirect

Cotton breeding for the development of early-maturing varieties is an effective way to improve multiple cropping indexes and alleviate the conflict between grains and cotton in the cultivated fields in China. In the present study, we aimed to identify upland cotton quantitative trait loci (QTLs) and candidate genes related to early-maturity traits, including whole growth period (WGP), flowering timing (FT), node of the first fruiting branch (NFFB), height of the node of the first fruiting branch (HNFFB), and plant height (PH). An early-maturing variety, CCRI50, and a late-maturing variety, Guoxinmian 11, were crossed to obtain biparental populations. These populations were used to map QTLs for the early-maturity traits for two years (2020 and 2021). With BSA-seq analysis based on the data of population 2020, the candidate regions related to early maturity were found to be located on chromosome D03. We then developed 22 polymorphic insertions or deletions (InDel) markers to further narrow down the candidate regions, resulting in the detection of five and four QTLs in the 2020 and 2021 populations, respectively. According to the results of QTL mapping, two candidate regions (InDel_G286-InDel_G144 and InDel_G24-InDel_G43) were detected. In these regions, three genes (GH_D03G0451, GH_D03G0649, and GH_D03G1180) have non-synonymous mutations in their exons and one gene (GH_D03G0450) has SNP variations in the upstream sequence between CCRI50 and Guoxinmian 11. These four genes also showed dominant expression in the floral organs. The expression levels of GH_D03G0451, GH_D03G0649 and GH_D03G1180 were significantly higher in CCRI50 than in Guoxinmian 11 during the bud differentiation stages, while GH_D03G0450 showed the opposite trend. Further functional verification of GH_D03G0451 indicated that the GH_D03G0451-silenced plants showed a delay in the flowering time. The results suggest that these are the candidate genes for cotton early maturity, and they may be used for breeding early-maturity cotton varieties.

Reference | Related Articles | Metrics

Copyright © Journal of Integrative Agriculture
Sponsored by Chinese Academy of Agricultural Sciences (CAAS)
Co-sponsored by China Association of Agricultural Science Societies (CAASS)
Publishing Service by Elsevier B.V.on behalf of KeAi Communications Co. Ltd.
Full text available online at ScienceDirect

About JIA

Editorial board

For authors