Comprehensive Analysis of the Forage Quality of Sweet Sorghum

doi:10.11924/j.issn.1000-6850.casb2022-0578

Abstract

Abstract:

In order to explore the relationship between different forage indexes of forage sweet sorghum, comprehensively evaluate forage sweet sorghum varieties, and improve the breeding process of new varieties, 19 forage indexes of 13 sweet sorghum varieties were analyzed by variation analysis, correlation analysis, principal component analysis and cluster analysis. The results showed that the variation coefficient of crude protein, acid detergent fiber (ADF) and neutral detergent fiber (NDF), which could best reflect the quality of forage grass, were all less than 10%, while the variation coefficient of starch, Brix and element indexes were all greater than 15%. Therefore, it is necessary to develop high protein germplasm resources in forage sweet sorghum breeding. Correlation analysis showed that ADF was significantly positively correlated with NDF (P<0.01), and calcium content was significantly positively correlated with total digestible nutrients and relative forage value (RFV) (P<0.01). 19 forage indexes were divided into 4 principal components by principal component analysis, and the cumulative contribution rate reached 90.49%. The comprehensive analysis showed that the top 5 varieties were J205, TP3, TP14, TP83 and TP5, which had better comprehensive forage quality. The 13 varieties were divided into 3 groups by cluster analysis, among which, J205 and TP3 were the high comprehensive quality forage varieties.

Key words: sorghum, forage quality, principal component analysis, cluster analysis, correlation analysis

ZHANG Wei, ZHANG Yang, WANG Guan, SHAO Rongfeng, XUE Dingding, CHANG Yuhui, YAN Hao, ZHAO Weijun. Comprehensive Analysis of the Forage Quality of Sweet Sorghum[J]. Chinese Agricultural Science Bulletin, 2023, 39(19): 124-130.

Figures/Tables 7

References 21

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编号	母本	父本
J106	E35/糖 A3	匈牙利帚高粱
J218	1383-2/MamaMama A3	E35/糖-1B 杂选
J205	R111/2457 A3	帚选黄株矮/品02283
J368	糖/E35-1/J7030-2 A3	匈牙利帚高粱
TP81	7050 A3	E35/糖-1B 杂选
TP82	E35/糖 A3	哈T-1/MamaMama-1杂
TP83	R111 A3	E35/糖-1B杂选
TP40	7050 A3	糖/E35-1B杂
TP3	E35/糖 A3	甜C-1
TP5	7050 A3	Sxtgl-1
TP14	R111A3	FH59
TP6	7050 A2	Sxtgl-1
TP7	E35/糖 A3	哈T/mamama

编号	母本	父本
J106	E35/糖 A3	匈牙利帚高粱
J218	1383-2/MamaMama A3	E35/糖-1B 杂选
J205	R111/2457 A3	帚选黄株矮/品02283
J368	糖/E35-1/J7030-2 A3	匈牙利帚高粱
TP81	7050 A3	E35/糖-1B 杂选
TP82	E35/糖 A3	哈T-1/MamaMama-1杂
TP83	R111 A3	E35/糖-1B杂选
TP40	7050 A3	糖/E35-1B杂
TP3	E35/糖 A3	甜C-1
TP5	7050 A3	Sxtgl-1
TP14	R111A3	FH59
TP6	7050 A2	Sxtgl-1
TP7	E35/糖 A3	哈T/mamama

项目	平均值	标准差	最大值	最小值	变异系数/%
出汁率	39.5	0.06	50	30	15.4
锤度/Brix	14.9	2.44	18.3	11.6	16.3
CP/%	6.8	0.56	8.1	6	8.3
NH₃-CP/%	0.96	0.13	1.1	0.7	13.2
RDP/%	5.1	0.44	6	4.4	8.6
ADF/%	33.9	2.53	37.7	28.7	7.5
NDF/%	53.5	4.21	60.2	46	7.9
NDF-30/%	49.9	2.01	54.4	46.8	4
淀粉/%	10.9	2.4	16.5	7.8	21.9
TFA/%	0.57	0.11	0.8	0.4	19.5
CF/%	1.61	0.14	1.8	1.4	8.6
TDN/%	60.48	1.31	63.3	58.1	2.2
NEL/(mcal/kg)	1.36	0.03	1.43	1.3	2.4
NEm/(mcal/kg)	1.38	0.05	1.49	1.28	3.8
NEg/(mcal/kg)	0.79	0.05	0.9	0.71	6
RFV	110	12.62	134.2	91.9	11.5
Ca含量/%	5.16	2.21	7.68	0.31	42.8
P含量/%	0.29	0.08	0.37	0.11	26.5
Mg含量/%	0.15	0.02	0.18	0.11	13.4

项目	平均值	标准差	最大值	最小值	变异系数/%
出汁率	39.5	0.06	50	30	15.4
锤度/Brix	14.9	2.44	18.3	11.6	16.3
CP/%	6.8	0.56	8.1	6	8.3
NH₃-CP/%	0.96	0.13	1.1	0.7	13.2
RDP/%	5.1	0.44	6	4.4	8.6
ADF/%	33.9	2.53	37.7	28.7	7.5
NDF/%	53.5	4.21	60.2	46	7.9
NDF-30/%	49.9	2.01	54.4	46.8	4
淀粉/%	10.9	2.4	16.5	7.8	21.9
TFA/%	0.57	0.11	0.8	0.4	19.5
CF/%	1.61	0.14	1.8	1.4	8.6
TDN/%	60.48	1.31	63.3	58.1	2.2
NEL/(mcal/kg)	1.36	0.03	1.43	1.3	2.4
NEm/(mcal/kg)	1.38	0.05	1.49	1.28	3.8
NEg/(mcal/kg)	0.79	0.05	0.9	0.71	6
RFV	110	12.62	134.2	91.9	11.5
Ca含量/%	5.16	2.21	7.68	0.31	42.8
P含量/%	0.29	0.08	0.37	0.11	26.5
Mg含量/%	0.15	0.02	0.18	0.11	13.4

	出汁率	锤度	CP	NH₃-CP	RDP	ADF	NDF	NDF-30	Starch	TFA
出汁率	1
锤度	-0.721^**	1
CP	-0.081	-0.166	1
NH₃-CP	0.105	-0.096	-0.746^**	1
RDP	0.028	-0.447	0.872^**	-0.551	1
ADF	-0.171	-0.313	0.03	0.146	0.317	1
NDF	-0.337	-0.173	0.097	0.186	0.333	0.941^**	1
NDF-30	-0.025	-0.006	-0.259	0.548	-0.164	0.039	0.124	1
Starch	-0.047	0.533	-0.119	-0.217	-0.472	-0.841^**	-0.801^**	-0.254	1
TFA	-0.559^*	0.649^*	0.470	-0.508	0.080	-0.366	-0.161	-0.199	0.503	1
Crude fat	-0.297	0.075	0.331	-0.014	0.177	0.086	0.354	-0.017	-0.122	0.538
TDN	0.025	0.476	-0.128	-0.003	-0.446	-0.911^**	-0.791^**	0.097	0.809^**	0.529
NEL	-0.046	0.542	-0.168	0.001	-0.485	-0.883^**	-0.743^**	0.149	0.819^**	0.548
NEm	0.013	0.495	-0.179	0.033	-0.483	-0.880^**	-0.751^**	0.142	0.780^**	0.518
NEg	0.071	0.468	-0.201	0.075	-0.502	-0.886^**	-0.770^**	0.139	0.784^**	0.473
RFV	0.289	0.243	-0.075	-0.163	-0.341	-0.983^**	-0.974^**	-0.117	0.823^**	0.266
Ca	0.276	0.148	0.449	-0.666^*	0.152	-0.659^*	-0.718^**	-0.21	0.571^*	0.418
P	0.295	0.243	-0.156	-0.077	-0.447	-0.844^**	-0.898^**	-0.078	0.723^**	0.213
Mg	-0.664^*	0.265	0.624^*	-0.287	0.530	0.259	0.469	0.132	-0.228	0.526
	Crude fat	TDN	NEL	NEm	NEg	RFV	Ca	P	Mg	-
出汁率
锤度
CP
NH₃-CP
RDP
ADF
NDF
NDF-30
Starch
TFA
Crude fat	1	-	-	-	-	-	-	-	-	-
TDN	0.092
NEL	0.113	0.985^**	1
NEm	0.107	0.994^**	0.990^**	1
NEg	0.073	0.993^**	0.979^**	0.994^**	1
RFV	-0.184	0.866^**	0.826^**	0.834^**	0.850^**	1
Ca	-0.252	0.556^*	0.511	0.517	0.518	0.691^**	1
P	-0.284	0.809^**	0.748^**	0.782^**	0.801^**	0.879^**	0.706^**	1
Mg	0.545	-0.215	-0.178	-0.227	-0.263	-0.384	-0.145	-0.526	1