JIANG Bai-fu,NIU Zhong-lin,QIU Lei,et al.Breeding and Utilization of Maize Inbred Line Hexuan 18[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(07):9-11.[doi:10.11942/j.issn1002-2767.2016.07.0009]
合选18的选育与利用
- Title:
- Breeding and Utilization of Maize Inbred Line Hexuan 18
- 文章编号:
- 1002-2767（2016）07-0009-03
- Keywords:
- maize; inbrid line; hybrids; economic benefit
- 分类号:
- S513.03
- 文献标志码:
- A
- 摘要:
- 针对合344高温短日照条件下容易返祖、制种产量低、早衰等缺点,研究利用（3081×合344)×Mo17（回交2代）自交5代，选育成优良骨干自交系合选18。合选18保持了合344相同的生育期（生育日数115 d左右）与广适性，增加了穗长（18 cm）、穗粗（4.2）和百粒重（32 g）。利用合选18作为亲本选育出玉米新品种合玉23。
- Abstract:
- For improve the traits of inbred line He344 which had the deficiency of atavism,low seed production and premature aging.Through 3081(local germplasm) and He344(early-maturing,disease resistance,wide adaptability,high combining ability),the F1 plant was backcrossed twice use the inbred line Mo17(late-maturing,disease resistance,wide adaptability,high combining ability) for selecting new inbred line.Using this method,Hexuan18(early-maturing,disease resistance,wide adaptability,high combining ability) which been used for variety Heyu23 was selected.
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备注/Memo
收稿日期：2016-06-01