WANG Junqiang,HAN Yehui,ZHOU Cao,et al.Creation and Utilization of High-Quality Maize Germplasm Resources N6321[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(05):113-116.[doi:10.11942/j.issn1002-2767.2023.05.0113]
优质玉米种质资源N6321创制与利用
- Title:
- Creation and Utilization of High-Quality Maize Germplasm Resources N6321
- 文章编号:
- 22
- Keywords:
- maize; germplasm resources; disease resistance; productivity
- 文献标志码:
- A
- 摘要:
- 玉米种质资源是选育玉米新品种的基础，针对现阶段市场需求，利用常规育种手段与分子辅助育种相结合，创制聚合高产、抗病、抗逆、脱水快等优点的新种质资源，是确保玉米持续增产和稳产的重要途径。优异种质资源N6321是利用先玉508玉米品种作为基础材料，通过人工辅助选择，创制而成。经对该新种质物候期、抗性能力、丰产性、血缘等多方面的研究表明，N6321隶属瑞德群，需有效积温2 650 ℃，抗叶斑病、高抗丝黑穗病、高抗茎腐病和中抗穗腐病，丰产性好。利用N6321选育的玉米新品种嫩单21，具有矮秆、耐密、早熟、宜机收的优点，适合在黑龙江省第一积温带下限、第二积温带上限种植，在实际生产中得到广大种植户的青睐。此种选育模式在未来玉米生产中有较好的推广价值。
- Abstract:
- Germplasm resources are the basis for the selection and breeding of new maize varieties， and in view of the current market demand， the combination of conventional breeding methods and molecular-assisted breeding is used to create new germplasm resources with high yield， disease resistance， stress resistance and fast dehydration， which is an important way to ensure the continuous increase and stable yield of maize. Excellent germplasm resource N6321 is created by using Xianyu 508 maize variety as the basic material and selecting it through manual assistance. Studies on new germplasm phenology， resistance， fertility， blood relations and other aspects showed that N6321 belongs to the Ruide group， which requires an effective accumulated temperature of 2 650 ℃， high resistance to leaf spot， high resistance to silk smut， high resistance to stem rot， medium resistance to spike rot， and good yield. The new corn variety nendan 21 bred by N6321 has the characteristics of short stem， dense tolerance， early maturation and suitable machine harvesting， which is suitable for planting in the first temperate zone and the second temperature in Heilongjiang Province， and has been favored by the public in actual production. This selective breeding model has good promotion value in future maize production.
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备注/Memo
收稿日期：2023-01-03