| 摘要: |
| 【目的】探索和发掘优质抗麦长管蚜的种质资源及方法，为高效节本型和环境友好型的抗麦长管蚜小麦育种研究利用提供理论依据。【方法】以GIS的空间分布分析法和小麦种质资源抗蚜性鉴定为基础，从377份小麦种质资源中随机选取22个种质资源的13个主要性状，运用灰色系统理论对其进行综合分析。【结果】GIS的空间分布分析结果表明，麦长管蚜种群对小麦种质资源的入侵扩散从分散危害演变为聚集危害为主。成株期田间自然鉴定结果表明，在377份种质资源中，高抗材料4份，分别是陕253、豫麦70、陕糯1号、186Tm，占鉴定材料的1.06%；中抗材料55份，占鉴定材料的14.59%，包括的种质资源有Amigo、98-10-35、小偃22、PI高；表现为低抗的材料有113份，占鉴定材料的29.97%。蚜情指数与各主要性状的关联度大小顺序为：抗性级别＞不孕小穗数＞穗长＞饱满度＞分蘖数＞可孕小穗数＞整齐度＞穗粒数＞株高＞单株产量＞穗下节间长＞颈长。【结论】采用GIS的空间分布分析、蚜情指数计算和灰色关联度分析相结合的方法，可以综合评判小麦种质资源对麦长管蚜的抗性优劣，并选出了部分高抗的小麦种质资源以及与抗蚜性状相关的主要农艺性状。 |
| 关键词: 麦长管蚜 小麦种质资源 性状 GIS的空间分布分析 蚜情指数 灰色关联度分析 |
| DOI： |
| 分类号: |
| 基金项目:国家“863”计划重大专项(2009AA101102)；陕西省13115科技创新工程重大科技专项(2007ZDKG-020)；国家杨凌农业生物技术育种中心专项 (99-1A)；西北农林科技大学拔尖人才支持计划项目；中德农业合作资助项目(2008/2009(04)) |
|
| Analysis on resistance of wheat germplasms by GIS to Sitobion avenae F. |
|
QANG Chunping,LUO Kun,ZHU Qidi,et al
|
|
1.College of Plant Protection,Northwest A&F University;2.College of Agronomy, Northwest A&F University;3.College of Agronomy,Henan University of Science and Techology
|
| Abstract: |
| 【Objective】Breeders have explored and found new and high wheat germplasms for resistance to S.avenae and method, providing theoretical basis and technical support for efficient and environment friendly wheat breeding.【Method】In this paper,based on the GIS spatial distribution analysis and identification of the wheat germplasms for resistance,13 main traits of 22 wheat germplasms from 377 wheat germplasms were analyzed by the grey system theory.【Result】The GIS spatial distribution analysis result indicated that damages of S.avenae population to the wheat germplasms were from the damages of invasion to the damages of aggregation.From the field trait to the inoculate experiment analysis,the results showed that in 377 wheat germplasms,4 high resistance wheat germplasms which occupied 1.06% of the material respectively were Shaan 253,Yumai 70, Shaannuo 1,186Tm;55 moderate resistance wheat germplasms occupied 14.59%,including Amigo,98-10-35,Xiaoyan 22,PI gao,and 113 low resistance wheat germplasms were 29.97%.The gray theoretical analysis showed that the orders of alternatives ranks were as follows: resistant scales>infertile spikelet>spike length>seed plumpness>spikes number per plant>fertile spikelet>uniformity degree>seed number per spike>plant height>grain weight per plant>stem length under spike>neck length.【Conclusion】Wheat germplasms resistance to S.avenae was evaluated comprehensively by GIS spatial distribution analysis,aphid index and grey system analysis,at the same time,it was concluded that some wheat germplasms had high resistance materials and obtained some main agronomic traits related with resistance. |
| Key words: Sitobion avenae F. wheat germplasms trait GIS spatial distribution resistance identification the grey system analysis |
