中国水稻科学 ›› 2016, Vol. 30 ›› Issue (2): 161-169.DOI: 10.16819/j.1001-7216.2016.5137
王亚梁, 张玉屏, 朱德峰*(), 向镜, 陈惠哲, 张义凯
收稿日期:
2015-09-16
修回日期:
2016-01-14
出版日期:
2016-03-10
发布日期:
2016-03-10
通讯作者:
朱德峰
作者简介:
# 共同第一作者;
基金资助:
Ya-liang WANG, Yu-ping ZHANG, De-feng ZHU*(), Jing XIANG, Hui-zhe CHEN, Yi-kai ZHANG
Received:
2015-09-16
Revised:
2016-01-14
Online:
2016-03-10
Published:
2016-03-10
Contact:
De-feng ZHU
About author:
# These authors contributed equally to this work;
摘要:
为明确水稻穗分化期高温对生长发育所造成的影响,以耐热籼稻黄华占和热敏感籼稻丰两优6号为材料,利用人工气候箱在穗分化期进行40℃(10:00-15:00)高温处理,以人工气候箱32℃适温处理为参考,室外环境温度为对照(CK),研究枝梗-颖花分化期(Ⅰ期)和花粉母细胞形成-减数分裂期(Ⅱ期)高温胁迫对水稻器官形态及干物质积累的影响。结果表明:1)Ⅰ期高温抑制幼穗分化,使穗分化期延长2.5~8.8 d;Ⅱ期高温阻碍水稻抽穗,导致穗分化期延长6.8~7.1 d,显著缩短上部茎节,降低抽穗度,其中热敏感品种降幅大于耐热品种;2)穗分化期高温处理显著降低每穗颖花数和颖花大小,颖花数下降原因在不同处理时期间存在差异,Ⅰ期高温减少颖花分化数;而Ⅱ期高温显著加速颖花退化,两个品种退化幅度均达50%以上,并显著降低了花药大小和颖花受精率,热敏感品种丰两优6号受高温影响要大于耐热品种;3)高温对叶片生长有促进作用,Ⅱ期高温处理表现尤为明显,两个时期高温处理对上3叶净光合速率和水稻单茎干物质积累没有显著影响。Ⅰ期高温不同部位间干物质积累无显著差异,而Ⅱ期高温显著降低茎鞘和穗部干物质积累,但高温导致高节位分枝发生,积累了一部分干物质,整体上单茎干物质积累量并没有显著下降。
中图分类号:
王亚梁, 张玉屏, 朱德峰, 向镜, 陈惠哲, 张义凯. 水稻器官形态和干物质积累对穗分化不同时期高温的响应[J]. 中国水稻科学, 2016, 30(2): 161-169.
Ya-liang WANG, Yu-ping ZHANG, De-feng ZHU, Jing XIANG, Hui-zhe CHEN, Yi-kai ZHANG. Response of Rice Organ Morphology and Dry Matter Accumulation to High Temperature at Different Panicle Initiation Stages[J]. Chinese Journal OF Rice Science, 2016, 30(2): 161-169.
图1 不同穗分化高温对水稻幼穗分化天数的影响 Ⅰ-枝梗-颖花分化期;Ⅱ-花粉细胞形成-减数分裂期。不同小写字母表示处理间在0.05水平上差异显著(新复极差法,n=10)。下同。
Fig. 1. Effects of high temperature at different panicle development periods on days for panicle initiation in rice. Ⅰ,Branch-spikelef differentiation stage;Ⅱ,Pollen mother cell for mation-meiosis stage. Different lowercase letters indicate significant difference among treatments at 0.05 level by SSR (n=10). The same as below.
时期 TP | 处理温度 TT | 黄华占 Huanghuazhan | 丰两优6号Fengliangyou 6 | |||
---|---|---|---|---|---|---|
抽穗度 HD/% | 抽穗速率 HS/(cm·d-1) | 抽穗度 HD/% | 抽穗速率 HS/(cm·d-1) | |||
CK | 96.6±4.9 a | 6.7±1.8 a | 100.0±0.0 a | 7.8±0.8 a | ||
I | 40℃ | 99.9±0.5 a | 5.4±0.5 a | 100.0±0.0 a | 7.9±2.1 a | |
32℃ | 99.0±2.8 a | 5.8±0.6 a | 99.8±1.2 a | 7.4±1.9 a | ||
Ⅱ | 40℃ | 60.8±10.1 b | 2.2±0.8 b | 46.8±11.6 b | 1.9±0.9 b | |
32℃ | 96.5±5.3 a | 5.4±1.8 a | 100.0±0.0 a | 8.2±1.6 a |
表1 不同穗分化期高温处理对水稻抽穗特性的影响(平均数±标准差)
Table 1 Effects of high temperature at different panicle development periods on rice heading(Mean±SD).
时期 TP | 处理温度 TT | 黄华占 Huanghuazhan | 丰两优6号Fengliangyou 6 | |||
---|---|---|---|---|---|---|
抽穗度 HD/% | 抽穗速率 HS/(cm·d-1) | 抽穗度 HD/% | 抽穗速率 HS/(cm·d-1) | |||
CK | 96.6±4.9 a | 6.7±1.8 a | 100.0±0.0 a | 7.8±0.8 a | ||
I | 40℃ | 99.9±0.5 a | 5.4±0.5 a | 100.0±0.0 a | 7.9±2.1 a | |
32℃ | 99.0±2.8 a | 5.8±0.6 a | 99.8±1.2 a | 7.4±1.9 a | ||
Ⅱ | 40℃ | 60.8±10.1 b | 2.2±0.8 b | 46.8±11.6 b | 1.9±0.9 b | |
32℃ | 96.5±5.3 a | 5.4±1.8 a | 100.0±0.0 a | 8.2±1.6 a |
品种与时期 Cultivar and TP | 处理温度 TT | 株高 Plant height | 穗长 Panicle length | 第5节间长 5th IL | 第4节间长 4th IL | 第3节间长 3rd IL | 第2节间长 2nd IL | 第1节间长 1st IL |
---|---|---|---|---|---|---|---|---|
黄华占 Huanghuazhan | ||||||||
CK | 86.8±1.8 a | 25.0±1.1 a | 34.3±2.4 a | 13.9±0.5 b | 7.5±0.2 b | 3.9±0.6 b | 2.2±0.3 a | |
Ⅰ | 40℃ | 85.3±3.1 a | 23.0±2.5 a | 32.8±2.2 a | 14.7±0.5 ab | 7.5±1.0 b | 4.6±0.9 ab | 2.7±0.7 a |
32℃ | 90.8±1.6 a | 24.8±0.5 a | 35.1±1.0 a | 15.5±0.4 a | 7.5±0.8 b | 5.4±0.3 a | 2.5±0.5 a | |
Ⅱ | 40℃ | 75.1±2.7 b | 22.6±0.2 b | 25.0±1.5 b | 13.5±0.6 b | 6.7±0.3 b | 4.9±0.6 ab | 2.3±0.1 a |
32℃ | 88.5±1.2 a | 24.0±0.7 a | 33.6±1.5 a | 14.1±1.0 ab | 9.6±0.3 a | 5.0±1.0 a | 2.6±1.2 a | |
丰两优6号 Fengliangyou 6 | ||||||||
CK | 103.6±2.0 a | 29.5±0.7 a | 37.1±0.6 a | 18.1±0.1 a | 11.0±1.0 b | 5.8±0.7 ab | 2.2±0.4 a | |
Ⅰ | 40℃ | 103.1±4.4 a | 24.3±1.3 b | 36.7±3.1 a | 19.8±0.7 a | 17.1±0.6 a | 3.1±0.3 b | 2.0±0.6 a |
32℃ | 102.7±3.8 a | 23.5±0.4 b | 33.9±3.7 a | 18.6±0.9 a | 16.3±0.6 a | 7.7±2.0 a | 2.7±0.4 a | |
Ⅱ | 40℃ | 65.5±2.7 c | 23.0±0.2 b | 15.1±0.3 b | 12.7±1.0 c | 7.8±0.4 c | 7.2±0.4 a | 2.4±0.3 a |
32℃ | 91.6±0.8 b | 25.7±1.4 b | 32.8±0.9 a | 14.8±0.6 b | 12.1±0.7 b | 5.0±0.2 ab | 2.1±0.3 a |
表2 水稻穗分化不同时期高温处理对株高和茎节伸长的的影响
Table 2 Effects of high temperature at different panicle development periods on plant height and internode growth in rice.cm
品种与时期 Cultivar and TP | 处理温度 TT | 株高 Plant height | 穗长 Panicle length | 第5节间长 5th IL | 第4节间长 4th IL | 第3节间长 3rd IL | 第2节间长 2nd IL | 第1节间长 1st IL |
---|---|---|---|---|---|---|---|---|
黄华占 Huanghuazhan | ||||||||
CK | 86.8±1.8 a | 25.0±1.1 a | 34.3±2.4 a | 13.9±0.5 b | 7.5±0.2 b | 3.9±0.6 b | 2.2±0.3 a | |
Ⅰ | 40℃ | 85.3±3.1 a | 23.0±2.5 a | 32.8±2.2 a | 14.7±0.5 ab | 7.5±1.0 b | 4.6±0.9 ab | 2.7±0.7 a |
32℃ | 90.8±1.6 a | 24.8±0.5 a | 35.1±1.0 a | 15.5±0.4 a | 7.5±0.8 b | 5.4±0.3 a | 2.5±0.5 a | |
Ⅱ | 40℃ | 75.1±2.7 b | 22.6±0.2 b | 25.0±1.5 b | 13.5±0.6 b | 6.7±0.3 b | 4.9±0.6 ab | 2.3±0.1 a |
32℃ | 88.5±1.2 a | 24.0±0.7 a | 33.6±1.5 a | 14.1±1.0 ab | 9.6±0.3 a | 5.0±1.0 a | 2.6±1.2 a | |
丰两优6号 Fengliangyou 6 | ||||||||
CK | 103.6±2.0 a | 29.5±0.7 a | 37.1±0.6 a | 18.1±0.1 a | 11.0±1.0 b | 5.8±0.7 ab | 2.2±0.4 a | |
Ⅰ | 40℃ | 103.1±4.4 a | 24.3±1.3 b | 36.7±3.1 a | 19.8±0.7 a | 17.1±0.6 a | 3.1±0.3 b | 2.0±0.6 a |
32℃ | 102.7±3.8 a | 23.5±0.4 b | 33.9±3.7 a | 18.6±0.9 a | 16.3±0.6 a | 7.7±2.0 a | 2.7±0.4 a | |
Ⅱ | 40℃ | 65.5±2.7 c | 23.0±0.2 b | 15.1±0.3 b | 12.7±1.0 c | 7.8±0.4 c | 7.2±0.4 a | 2.4±0.3 a |
32℃ | 91.6±0.8 b | 25.7±1.4 b | 32.8±0.9 a | 14.8±0.6 b | 12.1±0.7 b | 5.0±0.2 ab | 2.1±0.3 a |
品种和时期 Cultivar and TP | 处理温度 TT | 叶面积 Leaf area/cm2 | 净光合速率 Net photosynthetic rate/(μmol·m-2s-1) | |||||
---|---|---|---|---|---|---|---|---|
剑叶 Flag leaf | 倒2叶 Second leaf | 倒3叶 Third leaf | 剑叶 Flag leaf | 倒2叶 Second leaf | 倒3叶 Third leaf | |||
黄华占 Huanghuazhan | ||||||||
CK | 71.8±5.1 b | 63.0±1.0 a | 40.8±1.7 a | 29.1±2.9 a | 26.0±2.0 a | 17.7±2.0 a | ||
Ⅰ | 40℃ | 73.7±3.9 b | 69.7±4.6 a | 41.6±3.4 a | 28.7±0.3 a | 23.7±1.2 ab | 16.5±1.0 a | |
32℃ | 68.3±2.3 b | 64.3±1.1 a | 36.1±1.8 a | 26.1±2.1 a | 19.2±1.9 b | 15.0±2.1 a | ||
Ⅱ | 40℃ | 84.0±3.7 a | 68.2±5.2 a | 38.7±6.2 a | 27.4±1.7 a | 26.6±0.8 a | 19.2±1.8 a | |
32℃ | 72.9±2.7 b | 67.8±7.9 a | 43.2±3.6 a | 26.9±0.6 a | 20.8±1.2 b | 16.7±2.0 a | ||
丰两优6号 Fengliangyou 6 | ||||||||
CK | 64.1±4.3 b | 57.3±6.5 a | 38.1±5.5 b | 26.2±1.4 a | 23.6±3.4 a | 15.1±1.0 b | ||
Ⅰ | 40℃ | 65.2±5.8 b | 66.9±4.5 a | 44.4±4.5 a | 26.3±0.4 a | 25.0±1.7 a | 20.6±1.7 a | |
32℃ | 63.3±3.0 b | 67.9±4.8 a | 47.4±8.2 a | 27.6±1.3 a | 21.0±2.1 a | 16.0±1.6 b | ||
Ⅱ | 40℃ | 78.7±2.9 a | 81.9±2.0 a | 49.5±2.0 a | 24.5±1.0 a | 22.1±1.3 a | 14.2±1.0 b | |
32℃ | 60.2±6.4 b | 58.9±2.3 a | 42.4±4.5 a | 26.5±2.2 a | 24.4±1.2 a | 15.8±0.9 b |
表3 穗分化不同时期高温处理对上3叶叶面积及净光合速率的影响
Table 3 Effects of high temperature at different panicle development periods on area of top three leaves and photosynthetic rate of rice.
品种和时期 Cultivar and TP | 处理温度 TT | 叶面积 Leaf area/cm2 | 净光合速率 Net photosynthetic rate/(μmol·m-2s-1) | |||||
---|---|---|---|---|---|---|---|---|
剑叶 Flag leaf | 倒2叶 Second leaf | 倒3叶 Third leaf | 剑叶 Flag leaf | 倒2叶 Second leaf | 倒3叶 Third leaf | |||
黄华占 Huanghuazhan | ||||||||
CK | 71.8±5.1 b | 63.0±1.0 a | 40.8±1.7 a | 29.1±2.9 a | 26.0±2.0 a | 17.7±2.0 a | ||
Ⅰ | 40℃ | 73.7±3.9 b | 69.7±4.6 a | 41.6±3.4 a | 28.7±0.3 a | 23.7±1.2 ab | 16.5±1.0 a | |
32℃ | 68.3±2.3 b | 64.3±1.1 a | 36.1±1.8 a | 26.1±2.1 a | 19.2±1.9 b | 15.0±2.1 a | ||
Ⅱ | 40℃ | 84.0±3.7 a | 68.2±5.2 a | 38.7±6.2 a | 27.4±1.7 a | 26.6±0.8 a | 19.2±1.8 a | |
32℃ | 72.9±2.7 b | 67.8±7.9 a | 43.2±3.6 a | 26.9±0.6 a | 20.8±1.2 b | 16.7±2.0 a | ||
丰两优6号 Fengliangyou 6 | ||||||||
CK | 64.1±4.3 b | 57.3±6.5 a | 38.1±5.5 b | 26.2±1.4 a | 23.6±3.4 a | 15.1±1.0 b | ||
Ⅰ | 40℃ | 65.2±5.8 b | 66.9±4.5 a | 44.4±4.5 a | 26.3±0.4 a | 25.0±1.7 a | 20.6±1.7 a | |
32℃ | 63.3±3.0 b | 67.9±4.8 a | 47.4±8.2 a | 27.6±1.3 a | 21.0±2.1 a | 16.0±1.6 b | ||
Ⅱ | 40℃ | 78.7±2.9 a | 81.9±2.0 a | 49.5±2.0 a | 24.5±1.0 a | 22.1±1.3 a | 14.2±1.0 b | |
32℃ | 60.2±6.4 b | 58.9±2.3 a | 42.4±4.5 a | 26.5±2.2 a | 24.4±1.2 a | 15.8±0.9 b |
品种和时期 Cultivar and TP | 处理温度 TT | 颖花分化数 No. of differentiated spikelets | 颖花退化数 No. of degenerated spikelets | 颖花数 No. of spikelets | 颖花长度 Spikelet length /mm | 颖花宽度 Spikelet width /mm |
---|---|---|---|---|---|---|
黄华占 Huanghuazhan | ||||||
CK | 413.4±26.8 a | 150.7±5.4 b | 262.8±26.4 a | 8.7±0.1 a | 2.1±0.1 a | |
Ⅰ | 40℃ | 315.1±21.3 b | 122.2±11.1 c | 192.9±21.3 b | 8.8±0.1 a | 2.1±0.0 a |
32℃ | 396.2±30.2 a | 124.0±42.9 c | 272.2±25.5 a | 8.6±0.1 a | 2.1±0.0 a | |
Ⅱ | 40℃ | 403.1±38.3 a | 221.5±26.5 a | 181.6±14.2 b | 8.0±0.2 b | 2.1±0.0 a |
32℃ | 389.8±18.9 a | 135.3±11.5 bc | 254.5±12.9 a | 8.7±0.0 a | 2.2±0.1 a | |
丰两优6号 Fengliangyou 6 | ||||||
CK | 352.5±27.3 a | 71.7±10.3 b | 280.8±24.3 a | 9.0±0.1 a | 2.5±0.0 a | |
Ⅰ | 40℃ | 228.4±18.7 b | 46.8±14.5 c | 181.6±25.6 b | 8.8±0.2 a | 2.4±0.1 b |
32℃ | 334.9±27.6 a | 83.5±21.3 b | 251.4±41.6 a | 8.7±0.2 a | 2.5±0.0 a | |
Ⅱ | 40℃ | 333.6±27.1 a | 208.4±40.2 a | 125.2±20.7 c | 6.8±0.2 b | 2.5±0.1 b |
32℃ | 342.4±8.9 a | 105.2±5.6 b | 237.2±14.5 b | 8.7±0.1 a | 2.5±0.0 a |
表4 水稻穗分化不同时期高温对每穗颖花形成的影响
Table 4 Effect of high temperature at different panicle development periods on rice spikelet formation.
品种和时期 Cultivar and TP | 处理温度 TT | 颖花分化数 No. of differentiated spikelets | 颖花退化数 No. of degenerated spikelets | 颖花数 No. of spikelets | 颖花长度 Spikelet length /mm | 颖花宽度 Spikelet width /mm |
---|---|---|---|---|---|---|
黄华占 Huanghuazhan | ||||||
CK | 413.4±26.8 a | 150.7±5.4 b | 262.8±26.4 a | 8.7±0.1 a | 2.1±0.1 a | |
Ⅰ | 40℃ | 315.1±21.3 b | 122.2±11.1 c | 192.9±21.3 b | 8.8±0.1 a | 2.1±0.0 a |
32℃ | 396.2±30.2 a | 124.0±42.9 c | 272.2±25.5 a | 8.6±0.1 a | 2.1±0.0 a | |
Ⅱ | 40℃ | 403.1±38.3 a | 221.5±26.5 a | 181.6±14.2 b | 8.0±0.2 b | 2.1±0.0 a |
32℃ | 389.8±18.9 a | 135.3±11.5 bc | 254.5±12.9 a | 8.7±0.0 a | 2.2±0.1 a | |
丰两优6号 Fengliangyou 6 | ||||||
CK | 352.5±27.3 a | 71.7±10.3 b | 280.8±24.3 a | 9.0±0.1 a | 2.5±0.0 a | |
Ⅰ | 40℃ | 228.4±18.7 b | 46.8±14.5 c | 181.6±25.6 b | 8.8±0.2 a | 2.4±0.1 b |
32℃ | 334.9±27.6 a | 83.5±21.3 b | 251.4±41.6 a | 8.7±0.2 a | 2.5±0.0 a | |
Ⅱ | 40℃ | 333.6±27.1 a | 208.4±40.2 a | 125.2±20.7 c | 6.8±0.2 b | 2.5±0.1 b |
32℃ | 342.4±8.9 a | 105.2±5.6 b | 237.2±14.5 b | 8.7±0.1 a | 2.5±0.0 a |
处理时期TP | 处理温度TT | 黄华占Huanghuazhan | 丰两优6号Fengliangyou 6 | |||
---|---|---|---|---|---|---|
长 Length/mm | 宽 Width/mm | 长 Length/mm | 宽 Width/mm | |||
CK | 2.4±0.0 a | 0.4±0.0 a | 2.1±0.0 a | 0.4±0.0 a | ||
Ⅰ | 40℃ | 2.2±0.1 a | 0.4±0.0 a | 2.2±0.1 a | 0.4±0.0 a | |
32℃ | 2.3±0.1 a | 0.4±0.0 a | 2.1±0.1 a | 0.4±0.0 a | ||
Ⅱ | 40℃ | 1.4±0.0 b | 0.3±0.0 a | 1.6±0.1 b | 0.3±0.0 a | |
32℃ | 2.2±0.1 a | 0.4±0.0 a | 2.3±0.2 a | 0.4±0.0 a |
表5 穗分化不同时期高温对水稻花药大小的影响
Table 5 Effects of high temperature at different panicle development periods on rice anther size.
处理时期TP | 处理温度TT | 黄华占Huanghuazhan | 丰两优6号Fengliangyou 6 | |||
---|---|---|---|---|---|---|
长 Length/mm | 宽 Width/mm | 长 Length/mm | 宽 Width/mm | |||
CK | 2.4±0.0 a | 0.4±0.0 a | 2.1±0.0 a | 0.4±0.0 a | ||
Ⅰ | 40℃ | 2.2±0.1 a | 0.4±0.0 a | 2.2±0.1 a | 0.4±0.0 a | |
32℃ | 2.3±0.1 a | 0.4±0.0 a | 2.1±0.1 a | 0.4±0.0 a | ||
Ⅱ | 40℃ | 1.4±0.0 b | 0.3±0.0 a | 1.6±0.1 b | 0.3±0.0 a | |
32℃ | 2.2±0.1 a | 0.4±0.0 a | 2.3±0.2 a | 0.4±0.0 a |
图2 水稻穗分化不同时期高温处理对受精率的影响不同小写字母表示处理间在0.05水平上差异显著(新复极差法,n=3)。
Fig. 2. Effect of high temperature at different panicle development periods on rice fertility. Different lowercase letters indicate significant difference among treatments at 0.05 level by SSR (n=3).
品种和时期 Cultivar and TP | 处理温度 TT | 干物质积累 Dry matter accumulation/g | 单主茎 总干物质积累 Dry matter accumulation of main stem/g | |||
---|---|---|---|---|---|---|
茎鞘 Culm and sheath | 叶 Leaf | 穗 Panicle | 高节位分枝 Upper internode branch | |||
黄华占 Huanghuazhan | ||||||
CK | 2.53±0.20 a | 1.18±0.32 a | 0.76±0.22 a | 0.00±0.00 b | 4.48±0.98 a | |
Ⅰ | 40℃ | 2.44±0.20 a | 1.22±0.16 a | 0.62±0.12 a | 0.00±0.00 b | 4.28±0.40 a |
32℃ | 2.32±0.28 a | 1.28±0.18 a | 0.57±0.22 ab | 0.00±0.00 b | 4.17±0.51 a | |
Ⅱ | 40℃ | 1.89±0.25 b | 1.14±0.17 a | 0.36±0.10 b | 0.86±0.12 a | 4.25±0.51 a |
32℃ | 2.65±0.31 a | 1.29±0.27 a | 0.67±0.09 a | 0.00±0.00 b | 4.61±0.93 a | |
丰两优6号 Fengliangyou 6 | ||||||
CK | 2.23±0.52 a | 1.42±0.24 a | 0.64±0.20 a | 0.00±0.00 b | 4.29±0.85 a | |
Ⅰ | 40℃ | 2.09±0.16 ab | 1.09±0.17 a | 0.67±0.13 a | 0.00±0.00 b | 3.85±0.34 a |
32℃ | 1.92±0.40 ab | 1.02±0.23 a | 0.79±0.27 a | 0.00±0.00 b | 3.73±0.66 a | |
Ⅱ | 40℃ | 1.84±0.21 b | 1.14±0.18 a | 0.25±0.19 b | 0.92±0.21 a | 4.15±0.27 a |
32℃ | 2.27±0.23 a | 1.31±0.23 a | 0.76±0.11 a | 0.00±0.00 b | 4.34±0.37 a |
表6 水稻穗分化不同时期高温对单茎干物质积累的影响
Table 6 Effect of high temperature at different panicle development periods on rice dry matter accumulation of main stem.
品种和时期 Cultivar and TP | 处理温度 TT | 干物质积累 Dry matter accumulation/g | 单主茎 总干物质积累 Dry matter accumulation of main stem/g | |||
---|---|---|---|---|---|---|
茎鞘 Culm and sheath | 叶 Leaf | 穗 Panicle | 高节位分枝 Upper internode branch | |||
黄华占 Huanghuazhan | ||||||
CK | 2.53±0.20 a | 1.18±0.32 a | 0.76±0.22 a | 0.00±0.00 b | 4.48±0.98 a | |
Ⅰ | 40℃ | 2.44±0.20 a | 1.22±0.16 a | 0.62±0.12 a | 0.00±0.00 b | 4.28±0.40 a |
32℃ | 2.32±0.28 a | 1.28±0.18 a | 0.57±0.22 ab | 0.00±0.00 b | 4.17±0.51 a | |
Ⅱ | 40℃ | 1.89±0.25 b | 1.14±0.17 a | 0.36±0.10 b | 0.86±0.12 a | 4.25±0.51 a |
32℃ | 2.65±0.31 a | 1.29±0.27 a | 0.67±0.09 a | 0.00±0.00 b | 4.61±0.93 a | |
丰两优6号 Fengliangyou 6 | ||||||
CK | 2.23±0.52 a | 1.42±0.24 a | 0.64±0.20 a | 0.00±0.00 b | 4.29±0.85 a | |
Ⅰ | 40℃ | 2.09±0.16 ab | 1.09±0.17 a | 0.67±0.13 a | 0.00±0.00 b | 3.85±0.34 a |
32℃ | 1.92±0.40 ab | 1.02±0.23 a | 0.79±0.27 a | 0.00±0.00 b | 3.73±0.66 a | |
Ⅱ | 40℃ | 1.84±0.21 b | 1.14±0.18 a | 0.25±0.19 b | 0.92±0.21 a | 4.15±0.27 a |
32℃ | 2.27±0.23 a | 1.31±0.23 a | 0.76±0.11 a | 0.00±0.00 b | 4.34±0.37 a |
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