Wheat yellow mosaic virus resistant line, 'Kitami-94', developed by introgression of two resistance genes from the cultivar 'Madsen'.

IF 2 4区 农林科学 Q2 AGRONOMY Breeding Science Pub Date : 2022-09-01 DOI:10.1270/jsbbs.21101
Takako Suzuki, Yasuhiro Yoshimura, Shizen Ohnishi, Hironobu Jinno, Tatsuya Sonoda, Masashi Kasuya, Chihiro Souma, Tetsuya Inoue, Masatomo Kurushima, Akira Sugawara, Shinji Maeno, Takao Komatsuda
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引用次数: 1

Abstract

'Kitahonami' is a soft red winter wheat (Triticum aestivum L.) cultivar that has high yield, good agronomic performance and good quality characteristics. It currently accounts for 73% of the wheat cultivation area of Hokkaido the northern island in Japan and 42% of Japan's overall wheat cultivation. However, this cultivar is susceptible to Wheat yellow mosaic virus (WYMV). WYMV has become widespread recently, with serious virus damage reported in Tokachi and Ohotsuku districts, which are the main wheat production areas in Hokkaido. Here, we report a new wheat breeding line 'Kitami-94', which was developed over four years by repeated backcrossing with 'Kitahonami' using DNA markers for WYMV resistance linked to the Qym1 and Qym2 from 'Madsen'. Basic maps of Qym1 and Qym2 were created and used to confirm that 'Kitami-94' reliably carried the two resistance genes. 'Kitami-94' demonstrated WYMV resistance, and had agronomic traits and quality equivalent to 'Kitahonami' except for higher polyphenol oxidase activity and lower thousand grain weight. 'Kitami-94' may be useful for elucidating the mechanism of WYMV resistance in the background of 'Kitahonami', and for developing new cultivars.

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小麦黄花叶病毒抗性品系‘Kitami-94’是通过从品种‘Madsen’中引入两个抗性基因而获得的。
北川是一种高产、农艺性能好、品质优良的软红冬小麦(Triticum aestivum L.)品种。它目前占日本北海道小麦种植面积的73%,占日本整体小麦种植面积的42%。但该品种对小麦黄花叶病毒(WYMV)易感。WYMV最近已广泛传播,据报道,北海道主要小麦产区德胜区和大需区遭受了严重的病毒损害。在这里,我们报道了一种新的小麦育种品系‘Kitami-94’,该品系是利用与‘Madsen’的Qym1和Qym2相关的抗WYMV DNA标记,通过与‘Kitahonami’重复回交,在四年多的时间里培育出来的。建立了Qym1和Qym2的基本图谱,证实了‘Kitami-94’确实携带了这两个抗性基因。‘Kitahonami -94’对WYMV具有抗性,除多酚氧化酶活性较高、千粒重较低外,其他农艺性状和品质与‘Kitahonami’相当。‘Kitahonami -94’对阐明‘Kitahonami’对WYMV的抗性机制和培育新品种具有重要意义。
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来源期刊
Breeding Science
Breeding Science 农林科学-农艺学
CiteScore
4.90
自引率
4.20%
发文量
37
审稿时长
1.5 months
期刊介绍: Breeding Science is published by the Japanese Society of Breeding. Breeding Science publishes research papers, notes and reviews related to breeding. Research Papers are standard original articles. Notes report new cultivars, breeding lines, germplasms, genetic stocks, mapping populations, database, software, and techniques significant and useful for breeding. Reviews summarize recent and historical events related breeding. Manuscripts should be submitted by corresponding author. Corresponding author must have obtained permission from all authors prior to submission. Correspondence, proofs, and charges of excess page and color figures should be handled by the corresponding author.
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