糜子不同性状光周期敏感性的综合评价

doi:10.3864/j.issn.0578-1752.2020.03.002

Abstract

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.

Key words: photoperiod sensitivity, broomcorn millet, aboveground fresh weight, plant height, comprehensive evaluation

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 Agricultura Sinica, 2020, 53(3): 474-485.

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References 39

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来源地Regions	资源份数Sample size
中国山西Shanxi, China	23
中国陕西Shaanxi, China	7
中国黑龙江Heilongjiang, China	22
中国宁夏Ningxia, China	12
中国内蒙古Inner Mongolia, China	21
中国甘肃Gansu, China	12
中国河北Hebei, China	1
俄罗斯Russia	1

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

主成分 Component	性状的初始特征值（盆栽） Initial eigenvalues(pot)			性状的初始特征值（大田） Initial eigenvalues(field)
主成分 Component	特征值 Eigenvalues	方差贡献率 Variance contribution (%)	累计方差贡献率 Cumulative variance contribution (%)	特征值 Eigenvalues	方差贡献率 Variance contribution (%)	累计方差贡献率 Cumulative variance contribution (%)
1	2.668	33.354	33.354	3.982	49.777	49.777
2	2.315	28.939	62.294	1.707	21.340	71.116
3	0.997	12.461	74.755	0.878	10.973	82.089
4	0.870	10.874	85.629	0.613	7.662	89.751
5	0.621	7.756	93.384	0.471	5.885	95.636
6	0.293	3.656	97.041	0.211	2.637	98.273
7	0.182	2.271	99.312	0.108	1.345	99.618
8	0.055	0.688	100.000	0.031	0.382	100.000

性状 Character	主成分（盆栽）Principal component (pot)			主成分（大田）Principal component (field)
性状 Character	1	2	3	1	2	3
抽穗期HD	-0.344	0.161	0.515	0.349	-0.128	-0.226
株高PH	0.395	0.376	-0.060	0.445	0.061	0.138
主穗长PL	0.535	-0.007	0.087	0.324	0.469	-0.118
叶片数NL	-0.109	0.622	-0.020	0.390	-0.406	0.269
节数NN	-0.087	0.621	-0.034	0.378	-0.417	0.281
旗叶叶面积FLA	0.530	-0.099	0.250	0.320	0.488	-0.186
地上鲜重AFW	0.281	0.161	0.567	0.415	0.140	-0.065
千粒重1000-GW	0.246	0.160	-0.582	-0.081	0.404	0.852

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

Comprehensive Evaluation of Photoperiod Sensitivity Based on Different Traits of Broomcorn Millet

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性状 Character	与D简单相关Simple relevant with D	直接效应 Direct effect	间接效应 Indirect effect
性状 Character	与D简单相关Simple relevant with D	直接效应 Direct effect	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
抽穗期HD	-0.114	0.076		-0.046	-0.110	0.041	0.034	-0.107	-0.008	0.007
株高PH	0.787	0.300	-0.012		0.165	0.059	0.071	0.118	0.094	-0.009
主穗长PL	0.687	0.276	-0.030	0.180		-0.028	-0.016	0.218	0.092	-0.004
叶片数NL	0.382	0.171	0.018	0.103	-0.045		0.162	-0.077	0.054	-0.003
节数NN	0.405	0.173	0.015	0.124	-0.026	0.160		-0.070	0.032	-0.002
旗叶叶面积FLA	0.658	0.295	-0.027	0.120	0.204	-0.045	-0.041		0.158	-0.005
地上鲜重AFW	0.677	0.383	-0.002	0.074	0.066	0.024	0.014	0.122		-0.005
千粒重 1000-GW	0.241	-0.027	-0.018	0.099	0.041	0.021	0.012	0.052	0.063

性状 Character	与D简单相关 Simple relevant with D	直接效应 Direct effect	间接效应 Indirect effect
性状 Character	与D简单相关 Simple relevant with D	直接效应 Direct effect	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
抽穗期HD	0.536	0.078		0.137	0.080	0.062	0.054	0.058	0.122	-0.055
株高PH	0.867	0.250	0.043		0.163	0.082	0.076	0.123	0.140	-0.008
主穗长PL	0.784	0.249	0.025	0.163		0.023	0.019	0.180	0.103	0.023
叶片数NL	0.576	0.127	0.038	0.160	0.045		0.117	0.039	0.109	-0.059
节数NN	0.551	0.121	0.035	0.157	0.039	0.123		0.036	0.101	-0.060
旗叶叶面积FLA	0.773	0.238	0.019	0.128	0.189	0.021	0.018		0.144	0.016
地上鲜重AFW	0.811	0.251	-0.017	-0.008	0.022	-0.030	-0.029	0.015		-0.010
千粒重 1000-GW	0.195	0.214	0.044	0.163	0.119	0.064	0.057	0.161	-0.012

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