Comprehensive Evaluation of Photoperiod Sensitivity Based on Different Traits of Broomcorn Millet
WANG JunJie, WANG HaiGang, CAO XiaoNing, CHEN Ling, LIU SiChen, TIAN Xiang, QIN HuiBin, QIAO ZhiJun,Institute of Crop Germplasm Resources, Shanxi Academy of Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture/Shanxi Key Laboratory of Genetic Resources and Genetic Improvement of Minor Crops, Taiyuan 030031
Abstract 【Objective】The objective of this study is to investigate the photoperiod response characteristics of broomcorn millet of eight main agronomic traits, including heading period, plant height, panicle length, aboveground fresh weight, number of leaves, number of nodes, flag leaf area and 1000-grain weight, and to screen for the suitable traits for broomcorn millet photoperiod sensitivity evaluation by pot shading and field planting modes in two different photoperiod ecological regions.【Method】The photoperiod relative sensitivity and D value of comprehensive evaluation index of photoperiod sensitivity were established based on data values of eight traits in field and pot planting, and the photoperiod sensitivity of broomcorn millet was comprehensively evaluated by two methods.【Result】The result of variance analysis showed that eight traits of broomcorn millet were significant difference under different photoperiod treatments. The performance values of each agronomic trait in pot under long sunshine of sixteen hours were significantly higher than those in short sunshine of eight hours, and the performance values of each agronomic trait in Dingxiang area were significantly higher than those in Sanya area. It was found that photoperiod relative sensitivity of aboveground fresh weight was the highest in both pot and field planting, while the 1000-grain weight was the lowest. Correlation analysis showed that plant height, panicle length, aboveground fresh weight, flag leaf area, number of nodes and number of leaves had extremely significant correlated with the D value, the 1000-grain weight had positively correlated with D value, and heading period had no significant negative correlation with D value in pot. All the traits were positively significant correlated with the D value except 1000-grain weight in field planting. The top three in the simple correlation coefficients of each agronomic character and photoperiod sensitivity comprehensive index D in the field were plant height (0.867), aboveground fresh weight(0.811) and panicle length (0.784). Potted plants were height (0.787), panicle length (0.687) and aboveground fresh weight (0.677). The formula to calculate the photoperiod sensitivity comprehensive index D in pot was Y=0.048+0.012X1+0.063X2+0.0446X3+0.053X4+0.036X5+ 0.016X6+0.024X7-0.011X8, and the formula to calculate the photoperiod sensitivity comprehensive index D in field was Y=0.019+ 0.034X1+0.094X2+0.066X3+0.080X4+0.057X5+0.028X6+0.011X7+0.139X8, in which X1, X2, X3, X4, X5, X6, X7 and X8 represented heading period, plant height, panicle length, number of leaves, number of nodes, flag leaf area, aboveground fresh weight and 1000-grain weight respectively. Regression and path analysis showed that potted and field fresh weight and plant height had the largest direct effect on the comprehensive photoperiod sensitive index D, which were 0.383, 0.300 and 0.251, 0.250 respectively, followed by flag leaf area and panicle length, which were 0.295, 0.276 and 0.238, 0.249 respectively. By comparing and analyzing the results of pot and field planting between photoperiod relative sensitivity and comprehensive evaluation index D value, we found that aboveground fresh weight and plant height showed strong photoperiod sensitivity, followed by panicle length and flag leaf area, on the contrary, 1000-grain weight and heading period had weak photoperiod sensitivity.【Conclusion】Aboveground fresh weight and plant height can be used as main evaluation indexes for the photoperiod sensitivity of broomcorn millet, and flag leaf area and panicle length can be used as the reference evaluation indexes, while 1000-grain weight and heading period are not suitable for the evaluation indexes for the photoperiod sensitivity. Keywords:photoperiod sensitivity;broomcorn millet;aboveground fresh weight;plant height;comprehensive evaluation
PDF (933KB)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 王君杰, 王海岗, 曹晓宁, 陈凌, 刘思辰, 田翔, 秦慧彬, 乔治军. 糜子不同性状光周期敏感性的综合评价[J]. 中国农业科学, 2020, 53(3): 474-485 doi:10.3864/j.issn.0578-1752.2020.03.002 WANG JunJie, WANG HaiGang, CAO XiaoNing, CHEN Ling, LIU SiChen, TIAN Xiang, QIN HuiBin, QIAO ZhiJun. Comprehensive Evaluation of Photoperiod Sensitivity Based on Different Traits of Broomcorn Millet[J]. Scientia Acricultura Sinica, 2020, 53(3): 474-485 doi:10.3864/j.issn.0578-1752.2020.03.002
Table 2 表2 表2不同光周期对糜子8个性状的影响 Table 2The effect of different photoperiod conditions on 8 traits of broomcorn millet
性状 Character
不同处理Different treatments
盆栽Pot
大田Field
16 h
8 h
自然光照Natural light
定襄Dingxiang
三亚Sanya
抽穗期HD
43.24±0.26a
19.20±0.32c
31.23±0.78b
40.84±0.98a
18.71±0.07b
株高 PH
123.79±13.43a
49.3±5.13c
97.24±6.51b
163.10±4.55a
72.43±1.34b
主穗长PL
28.84±1.89a
13.82±1.47c
25.88±1.94b
37.64±1.53a
16.75±0.23b
叶片数NL
7.13±0.05a
4.72±0.11c
6.49±0.09b
7.51±0.07a
4.90±0.04b
节数NN
6.15±0.08a
3.82±0.1c
5.49±0.07b
6.52±0.07a
3.92±0.06b
旗叶叶面积FLA
29.12±3.39a
12.62±2.15b
28.67±1.71a
52.80±3.73a
24.60±2.22b
地上鲜重AFW
2.68±0.31a
1.02±0.02c
2.24±0.10b
20.09±2.12a
5.31±0.56b
千粒重1000-GW
6.37±0.05a
5.31±0.03c
6.15±0.04b
6.87±0.34a
5.20±0.24b
HD: Heading date; PH: Plant height; PL: Panicle length; NL: Number of leaves; NN: Number of nodes; FLA: Flag leaf area; AFW: Aboveground fresh weight; 1000-GW: 1000-grain weight. The different lowercase letters mean a significant difference(P<0.05). The same as below HD:抽穗期;PH:株高;PL:主穗长;NL:叶片数;NN:节数;FLA:旗叶叶面积;AFW:地上鲜重; 1000-GW:千粒重。不同小写字母表示差异显著(P<0.05)。下同
HD:抽穗期;PH:株高;PL:主穗长;NL:叶片数;NN:节数;FLA:旗叶叶面积;AFW:地上鲜重; 1000-GW:千粒重。下同 Fig. 1Sensitivity of each trait under different photoperiod conditions
HD: Heading date; PH: Plant height; PL: Panicle length; NL: Number of leaves; NN: Number of nodes; FLA: Flag leaf area; AFW: Aboveground fresh weight; 1000-GW: 1000-grain weight. The same as below
Table 5 表5 表5农艺性状与光周期敏感综合指标D的相关系数(盆栽) Table 5Correlation coefficient between agronomic characters and photoperiod comprehensive evaluation index D (pot)
性状 Character
抽穗期 HD
株高 PH
主穗长 PL
叶片数 NL
节数 NN
旗叶叶面积 FLA
地上鲜重 AFW
千粒重 1000-GW
D值
抽穗期HD
1.000
株高PH
-0.154
1.000
主穗长PL
-0.397**
0.598**
1.000
叶片数NL
0.240*
0.344**
-0.164
1.000
节数NN
0.198*
0.412**
-0.094
0.935**
1.000
旗叶叶面积FLA
-0.363**
0.399**
0.738**
-0.262**
-0.238*
1.000
地上鲜重AFW
-0.021
0.245*
0.240*
0.141
0.082
0.412**
1.000
千粒重 1000-GW
-0.237*
0.330**
0.150
0.120
0.066
0.175
0.163
1.000
D值
-0.114
0.787**
0.687**
0.382**
0.405**
0.658**
0.677**
0.241*
1.000
* and ** indicate significant correlations at 0.05 and 0.01 levels, respectively. The same as below **和*分别表示1%和5%水平上极显著差异和显著差异。下同
Table 6 表6 表6农艺性状与光周期敏感综合指标D的相关系数(大田) Table 6Correlation coefficient between agronomic characters and photoperiod comprehensive evaluation index D (field)
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