HAN Hairong,XU Liang,LI Kaixiang,et al.Evaluation of Drought Resistance in Different Ecological Types of Rapeseed (Brassica napus L.)[J].Northern Horticulture,2025,(24):17-25.[doi:10.11937/bfyy.20251945]
不同生态型甘蓝型油菜抗旱性评价
- Title:
- Evaluation of Drought Resistance in Different Ecological Types of Rapeseed (Brassica napus L.)
- 文章编号:
- 1001-0009(2025)24-0017-09
- 分类号:
- S 565.4
- 文献标志码:
- A
- 摘要:
- 以28份不同生态型的甘蓝型油菜为试材,采用苗期反复干旱法和成株期田间直接测定法,研究了不同生态型油菜抗旱性多方面差异,以期为油菜抗旱性评价提供参考依据。结果表明:苗期3次干旱处理幼苗存活率平均值不断减小,品种间存活率的差异较大;成株期各农艺指标较对照均呈下降趋势,下降幅度各异。基于反复干旱存活率筛选得到6份苗期强抗旱种质,其中5份为春性材料,占供试春性材料的29.41%;1份为半冬性材料,占供试半冬性材料的9.09%;成株期基于产量各性状抗旱系数的综合抗旱评价值D得到了9份强抗旱种质,其中7份为春性材料,占供试春性材料的43.75%;2份为半冬性材料,占供试半冬性材料的18.18%。在该研究的供试材料中,春性甘蓝型油菜相比半冬性甘蓝型油菜抗旱资源占比更高。
- Abstract:
- Taking 28 Brassica napus L. germplasms of different ecotypes as test the materials,the multifaceted differences in drought resistance among various ecological types of rapeseed was investigated using repeated drought treatment at the seedling stage and direct field measurements at the mature plant stage,in order to provide reference for the evaluation of rapeseed drought resistance.The results showed that after three drought treatments at the seedling stage,the average seedling survival rate continuously decreased,with significant differences among varieties.At the mature plant stage,all agronomic traits showed a downward trend compared to the control,with varying degrees of reduction.Based on survival rates under repeated drought,six highly drought-resistant germplasm lines at the seedling stage were selected,including five spring-type lines accounting for 29.41% of the tested spring-type material and one semi-winter type line accounting for 9.09% of the tested semi-winter material.At the mature plant stage,comprehensive drought resistance evaluation values (D) derived from the drought coefficients of various yield-related traits identified nine highly drought-resistant germplasm lines,including seven spring-type lines accounting for 43.75% of the tested spring-type material and two semi-winter type lines accounting for 18.18% of the tested semi-winter material.In the test materials of this study,spring-type Brassica napus L. exhibits a higher proportion of drought-resistant traits compared to semi-winter-type Brassica napus L..
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备注/Memo
第一作者简介:韩海蓉(1998-),女,硕士研究生,研究方向为甘蓝型油菜抗逆性。E-mail:1246702682@qq.com.责任作者:赵志刚(1978-),男,博士,研究员,现主要从事油菜种质资源鉴定与创新等研究工作。E-mail:13897474887@126.com.基金项目:农业生物育种国家科技重大专项资助项目(2022ZD0401001);青海省“帅才科学家负责制”计划资助项目(2022-NK-170)。收稿日期:2025-05-26