The Impacts of Post-Anthesis Warming on Grain Yield and Quality of Late Japonica Rice in a Double Rice Cropping System
YANG TaoTao1, XIE JiaXin1, HUANG Shan1, TAN XueMing1, PAN XiaoHua1, ZENG YongJun1, SHI QingHua1, ZHANG Jun2, ZENG YanHua11. Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/ Collaborative Innovation Center for the Modernization Production of Double Cropping Rice, Jiangxi Agricultural University/Southern Regional Collaborative Innovation Center for Grain and Oil Crops in China, Nanchang 330045 2. Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081
Editor:YANGXin-hao Received:2019-08-26Accepted:2019-10-18Online:2020-04-01 作者简介 About authors 杨陶陶,E-mail:15170477995@163.com。
摘要 【目的】 明确花后增温对双季晚粳稻产量和稻米品质的影响,以期为未来气候变暖条件下双季晚粳稻安全生产和优质栽培提供理论依据。 【方法】 本研究于2017—2018年在江西农业大学上高科技驿站试验基地进行,该地区位于江西双季稻主产区。以籼粳杂交稻甬优1538为试验材料,设置花后增温(post-anthesis warming treatment,PAW;从抽穗期到成熟期昼夜不间断增温)和不增温对照(ambient temperature treatment,CK;安装与增温处理相同的装置,但不供电)2个处理,随机区组设计,3次重复。采用稻田开放式远红外主动增温(free-air temperature increase,FATI)系统对水稻冠层进行增温,对比分析了不增温和花后增温条件下,晚粳稻产量、产量构成、加工品质、外观品质、RVA谱特征值、直链淀粉含量、蛋白质含量和氨基酸含量的变化。【结果】 花后增温导致晚粳稻甬优1538的产量和稻米品质发生明显变化,且2年变化趋势基本一致。与不增温对照相比,花后增温2.2℃显著降低了晚粳稻产量,平均降幅为4.4%。花后增温条件下,2年晚粳稻的糙米率、精米率和整精米率均无显著变化,但2年的垩白粒率和垩白度分别平均显著提高了27.4%和24.4%。花后增温提高了米粉RVA谱特征值的峰值黏度、热浆黏度和糊化温度,降低了其消减值,而对崩解值和最终黏度无显著影响。花后增温条件下,直链淀粉含量呈下降趋势,2年平均降幅为6.4%;但精米中蛋白质相对含量和绝对含量均呈增加趋势,2年平均增幅分别为8.7%和6.6%。另外,花后增温均提高了精米中非必需氨基酸和必需氨基酸的含量,并且非必需氨基酸对增温的响应比必需氨基酸敏感,其中非必需氨基酸的总量显著提高了5.7%。从氨基酸的相对比例可以发现,花后增温对绝大多数氨基酸的相对比例无显著影响,而酪氨酸和甲硫氨酸的相对比例显著提高。【结论】 花后增温降低了晚粳稻产量,对稻米加工品质无显著影响,使稻米外观品质品和蒸煮品质变差,而有利于改善其营养品质和食味品质。 关键词:全球变暖;花后增温;双季晚粳稻;产量;稻米品质
Abstract 【Objective】 The aim of this study was to evaluate the response of the grain yield and quality of late japonica rice in a double rice cropping system to post-anthesis warming, so as to provide a theoretical basis for the safe production and high quality cultivation of double-cropped late japonica rice under the future warming conditions.【Method】 This experiment was conducted at Shanggao Experimental Station of Jiangxi Agricultural University in 2017 and 2018, which was located in the main producing area of a double rice cropping system. The field warming experiment consisted of post anthesis warming treatment (PAW: increases temperature day and night continuously from heading stage to maturity stage) and ambient temperature treatment (CK) with three replicates in a randomized complete block design. The tested rice cultivar was indica-japonica hybrid rice Yongyou1538. PAW treatment was treated with a free-air temperature increase (FATI) facility. Grain yield, yield components, milling quality, appearance quality, RVA, amylose content, protein content, and amino acid content were compared and analyzed between control and post-anthesis warming treatments. 【Result】 Grain yield and quality of Yongyou 1538 changed obviously under PAW, and the change trend was basically consistent in two years. The specific performances were as follows: compared with CK, post-anthesis warming with an average canopy temperature increase of 2.2℃ decreased the grain yield by an average of 4.4% in two years. PAW had no significant effects on the milling quality, but increased chalky grain rate and chalkiness by an average of 27.4% and 24.4% in two years, respectively. Peak viscosity, trough viscosity, and pasting temperature showed increase trends under post-anthesis warming condition, but decreased setback, and had no effects on breakdown and final viscosity. The amylose content was decreased by an average of 6.4%, but the protein relative and absolute contents in milled rice were increased by an average of 8.7% and 6.6%, respectively. In addition, the content of non-essential amino acids and essential amino acids in milled rice were both increased under PAW, and the response of non-essential amino acids to PAW was more sensitive than that of essential amino acids, among which the total amount of non-essential amino acids was significantly increased by 5.7%. From the relative ratio of amino acids, it could be found that PAW had no significant effect on the relative ratio of most amino acids, but Tyr and Met. 【Conclusion】 Post-anthesis warming decreased grain yield of late japonica rice, deteriorated its appearance and cooking quality, but benefited its nutritional and eating quality. Keywords:global warming;post-anthesis warming;double-cropped late japonica rice;grain yield;grain quality
PDF (492KB)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 杨陶陶, 解嘉鑫, 黄山, 谭雪明, 潘晓华, 曾勇军, 石庆华, 张俊, 曾研华. 花后增温对双季晚粳稻产量和稻米品质的影响[J]. 中国农业科学, 2020, 53(7): 1338-1347 doi:10.3864/j.issn.0578-1752.2020.07.004 YANG TaoTao, XIE JiaXin, HUANG Shan, TAN XueMing, PAN XiaoHua, ZENG YongJun, SHI QingHua, ZHANG Jun, ZENG YanHua. The Impacts of Post-Anthesis Warming on Grain Yield and Quality of Late Japonica Rice in a Double Rice Cropping System[J]. Scientia Acricultura Sinica, 2020, 53(7): 1338-1347 doi:10.3864/j.issn.0578-1752.2020.07.004
Table 1 表1 表1花后增温对水稻冠层温度的影响 Table 1Effects of post-anthesis warming on rice canopy temperature (℃)
年份Year
处理Treatment
全天Diurnal
夜间Night time
白天Daytime
2017
CK
20.0±0.1
17.9±0.2
25.1±0.2
PAW
21.8±0.2
19.9±0.2
26.5±0.1
Δ
1.8
2.0
1.4
2018
CK
22.0±0.2
18.1±0.0
26.0±0.4
PAW
24.4±0.2
21.2±0.2
27.7±0.1
Δ
2.4
3.1
1.7
Δ indicates difference value between two temperature regimes (PAW and CK). Values indicate mean±SD. The same as below Δ表示增温和不增温之间的温度差值。表中数值均为平均值±标准差。下同
Table 2 表2 表2花后增温对产量和产量构成的影响 Table 2Effects of post-anthesis warming on grain yield and yield components
年份 Year
处理 Treatment
产量 Grain yield (t·hm-2)
有效穗数 Panicle number (104·hm-2)
每穗粒数 Spikelet number per panicle
结实率 Filled grain percentage (%)
千粒重 1000-grain weight (g)
2017
CK
11.19±0.39a
238.1±8.5a
263.7±11.9a
82.6±3.5b
26.9±0.2a
PAW
10.54±0.34b
233.5±13.2a
250.2±11.1a
84.6±4.1b
26.2±0.3b
2018
CK
10.80±0.17ab
235.4±8.1a
237.6±15.7a
94.0±0.9a
26.5±0.2b
PAW
10.48±0.13b
232.8±14.9a
235.6±10.7a
92.0±2.1a
26.2±0.2b
方差分析ANOVA
年份 (Y)
ns
ns
ns
**
ns
处理 (T)
*
ns
ns
ns
**
年份×处理 Y×T
ns
ns
ns
ns
*
Values followed by different lowercase letters within a column is significantly different at 0.05 probability level. ns indicates no significant difference, * and ** indicate significant difference at 0.05 and 0.01 levels, respectively. The same as below 同一列不同小字母表示在0.05水平上差异显著。ns表示差异不显著,*和**分别表示在0.05和0.01水平上差异显著。下同
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