A New Silage Corn Cultivar ‘Jinhui 658’: Breeding and Characteristics Evaluation in Silk Road Arid and Cold Region

doi:10.11924/j.issn.1000-6850.casb2024-0785

Abstract

Abstract:

This study aims to breed high-yielding and high-quality silage maize hybrids suitable for the Silk Road cold and arid region in Gansu, in order to solve the demand for silage maize varieties due to the shortage of silage feed. Experimental materials were derived from a cross between female parent G2281 and male parent 17RT. Five trial sites were established to carry out field trait observation, seed testing, yield measurements, various identification and testing. The results showed that the average dry matter yield from the 2-year multi-point regional trials was 35162.3 kg/hm², which was 4.3% higher than that of the control group. The rate of average yield increase was more than 70%. The 1-year multi-point production test yielded an average dry matter output of 36048.0 kg/hm², an increase of 8.7% compared to the control, and yield increase reached 100%. In the whole plant quality analysis, the neutral detergent fiber (NDF) content was 39.3%, acid detergent fiber (ADF) content was 20.2%, crude protein (CP) content was 7.6%, and starch (ST) content was 30.4%. It is resistant to Pythium stem rot and head smut, with strong lodging resistance, good green retention and excellent comprehensive properties. Based on the above research results, a new silage maize cultivar ‘Jinhui 658’ with strong adaptability is selected and bred, which is suitable for planting in cold and dry spring maize area of Silk Road in Gansu Province, and plays a role in promoting the quality and efficiency of silage maize industry.

Key words: silk road arid and cold region, silage corn, Jinhui 658, hybrid breeding, agronomic traits, yield performance, variety characteristics, resistance evaluation

LEI Yuming, ZHENG Tianxiang, LI Huiwen, WANG Tingsan, WANG Aixia, GUAN Yuan. A New Silage Corn Cultivar ‘Jinhui 658’: Breeding and Characteristics Evaluation in Silk Road Arid and Cold Region[J]. Chinese Agricultural Science Bulletin, 2025, 41(33): 32-38.

Figures/Tables 6

References 25

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试验地点	海拔/m	年有效积温(≥10℃) )/℃	无霜期/d	年降水量/mm
肃州	1340~2200	3037.0	127~158	50~170
甘州	1200~2200	2930.0~3100.0	138~160	109.0~228.9
凉州	1500~2000	2454.8~3811.8	110~190	51.3~219.9
景泰	1274~3321	3038.0	120~160	150.0~225.0
崆峒	1089~1800	3148.8	158~183	420.0~600.0
泾川	930~1462	3200.0~3700.0	156~188	522.6
临夏	1600~2000	1800.0~2400.0	150~170	273.7~592.7

试验地点	海拔/m	年有效积温(≥10℃) )/℃	无霜期/d	年降水量/mm
肃州	1340~2200	3037.0	127~158	50~170
甘州	1200~2200	2930.0~3100.0	138~160	109.0~228.9
凉州	1500~2000	2454.8~3811.8	110~190	51.3~219.9
景泰	1274~3321	3038.0	120~160	150.0~225.0
崆峒	1089~1800	3148.8	158~183	420.0~600.0
泾川	930~1462	3200.0~3700.0	156~188	522.6
临夏	1600~2000	1800.0~2400.0	150~170	273.7~592.7

试验地点	2020年			2021年
试验地点	干重/(kg/hm²)	比CK增减产/%	产量位次	干重/(kg/hm²)	比CK增减产/%	产量位次
肃州	35905.5	11.4	6	35601.0	17.31	4
凉州	42543.0	6.8	5	30081.0	-8.54	11
景泰	36868.5	1.9	7	37804.5	5.16	5
崆峒	32083.5	-1.6	7	-	-	-
临夏	33321.0	-5.3	10	-	-	-
甘州	-	-	-	31524.0	5.05	10
泾川	-	-	-	35884.5	11.59	7
平均	36144.0	2.6	9	34180.5	8.92	8

试验地点	2020年			2021年
试验地点	干重/(kg/hm²)	比CK增减产/%	产量位次	干重/(kg/hm²)	比CK增减产/%	产量位次
肃州	35905.5	11.4	6	35601.0	17.31	4
凉州	42543.0	6.8	5	30081.0	-8.54	11
景泰	36868.5	1.9	7	37804.5	5.16	5
崆峒	32083.5	-1.6	7	-	-	-
临夏	33321.0	-5.3	10	-	-	-
甘州	-	-	-	31524.0	5.05	10
泾川	-	-	-	35884.5	11.59	7
平均	36144.0	2.6	9	34180.5	8.92	8

试验地点	干重/(kg/hm²)	比CK增减产/%	产量位次
肃州	33684.0	17.3	1
凉州	33799.5	10.0	4
景泰	48813.0	6.5	2
甘州	28290.0	2.1	8
泾川	35653.5	7.8	4
平均	36048.0	8.7	2