This study was supported by the State Key Research and Development Program “Food Production Enhancement and Efficiency Innovation” Key Special Project.2017YFD0300304-02 the China Agriculture Research System.CARS-02-18
Abstract This study was expected to explore the relation of grain-filling and dehydration characteristics with changes of endogenous hormones of summer maize hybrids differing in maturities, providing theoretical references for mechanized harvest of grains, high-yield, high-efficiency production and breeding of summer maize hybrids in the Huang-Huai-Hai Rivers region. The early maturity hybrids Denghai 518 (DH518), Hengzao 8 (HZ8) and the late maturity hybrids Zhengdan 958 (ZD958), Denghai 605 (DH605) were used to measure changes of dry matter accumulation, water content and endogenous hormone content in the process of kernel formation. Compared with the late maturity hybrids, the early maturity hybrids had shorter grain-filling duration, earlier beginning of dehydration, higher dehydration rate, lower kernel weight at physiological maturity stage, and lower yield. but among the early maturity hybrids, DH518 had significantly higher yield than HZ8. The endogenous hormones content and their changes in different hybrids were different, but the trend that the same hormone changed with grain development was the same. The ABA content of the early maturity hybrids in grain was higher than that of the late maturity hybrids, especially in the middle-late grain-filling stage. Both grain filling and dehydration rate were related to endogenous hormone, the dehydration rate of the early hybrids was positively correlated with ZR content. Keywords:summer maize;growth period;grain-filling;grain dehydration;endogenous hormone
PDF (624KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 万泽花, 任佰朝, 赵斌, 刘鹏, 张吉旺. 不同熟期夏玉米品种籽粒灌浆脱水特性和激素含量变化[J]. 作物学报, 2019, 45(9): 1446-1453. doi:10.3724/SP.J.1006.2019.83078 WAN Ze-Hua, REN Bai-Zhao, ZHAO Bin, LIU Peng, ZHANG Ji-Wang. Grain filling, dehydration characteristics and changes of endogenous hormones of summer maize hybrids differing in maturities[J]. Acta Agronomica Sinica, 2019, 45(9): 1446-1453. doi:10.3724/SP.J.1006.2019.83078
标以不同小写字母的柱值达到0.05显著差异。DH518: 登海518; HZ8: 衡早8号; ZD958: 郑单958; DH605: 登海605。 Fig. 1Yield of summer maize hybrids differing in maturities
Bars superscripted by a different small letter are significantly different at the 0.05 probability level. DH518: Denghai 518; HZ8: Hengzao 8; ZD958: Zhengdan 958; DH605: Denghai 605.
Table 2 表2 表2不同熟期夏玉米品种籽粒灌浆速率、脱水速率与各激素含量及其比值的相关分析(2017) Table 2Correlation analysis on grain filling rate, dehydration rate and hormones ratio of summer maize hybrids differing in maturities (2017)
品种 Hybrid
激素含量及其比值 Hormone content and its ratio
IAA
ZR
GA3
ABA
ABA/ZR
ABA/IAA
ABA/GA3
籽粒灌浆速率 Grain filling rate
DH518, HZ8#
0.958*
0.771
0.828
-0.737
-0.796
-0.915
-0.813
ZD958, DH605#
0.945
0.911
0.573
-0.876
-0.889
-0.910
-0.875
籽粒脱水速率 Grain dehydration rate
DH518, HZ8#
0.854
0.987*
0.413
-0.927
-0.931
-0.840
-0.860
ZD958, DH605#
0.798
0.907
-0.002
-0.916
-0.889
-0.873
-0.705
# represent the correlation between mean value of two hybrids’ grain filling rate or dehydration rate and mean value of hormone content and its ratio. * significant at the 0.05 level (2-tailed). DH518: Denghai 518; HZ8: Hengzao 8; ZD958: Zhengdan 958; DH605: Denghai 605. # 代表两品种籽粒灌浆速率或脱水速率的均值与各激素含量及比值的均值进行相关性分析。*代表在0.05水平(双侧)上显著相关。DH518: 登海518; HZ8: 衡早8号; ZD958: 郑单958; DH605: 登海605。
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