Developing stripe rust resistant wheat (Triticum aestivum L.) lines with gene pyramiding strategy and marker-assisted selection
Stripe rust or yellow rust, caused by Puccinia striiformis f. sp. tritici ( Pst ), is one of the most destructive diseases of wheat ( Triticum aestivum L.) worldwide. Growing resistant cultivars is the most effective approach to control the disease. There have been numerous reports on the resistance...
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Published in | Genetic resources and crop evolution Vol. 67; no. 2; pp. 381 - 391 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
01.02.2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Stripe rust or yellow rust, caused by
Puccinia striiformis
f. sp.
tritici
(
Pst
), is one of the most destructive diseases of wheat (
Triticum aestivum
L.) worldwide. Growing resistant cultivars is the most effective approach to control the disease. There have been numerous reports on the resistance genes to stripe rust (
Yr
gene) in wheat, but just a few
Yr
genes are resistant to currently epidemic races and applied in wheat production. Gene pyramiding is considered to be an effective way to enhance durable disease resistance in crops. In this experiment, a panel of
Yr
gene pyramiding lines (consisting of 3–8
Yr
genes) with cv. Chuanyu12 as background parent were constructed by using marker assistant selection and evaluated under currently epidemic
Pst
races. The results showed that the number of pyramided
Yr
genes was significant correlated with stripe rust resistance (
p
< 0.001).
Yr15
,
Yr62
and
Yr65
are effective to the current
Pst
races. Pyramiding more than four effective or partially effective
Yr
genes can provide enough resistance to stripe rust. And additive effects or epistatic effects existed in gene combinations in this study, such as
Yr26
+
Yr48
,
Yr30
+
Yr64
and
Yr30
+
Yr48
et al. Moreover, the effects of
Yr
gene pyramids on currently prevalent
Pst
races and agronomic traits were also evaluated, and
Yr
-gene pyramiding lines with desirable agronomic traits were obtained for durable controlling
Pst
in wheat breeding. |
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ISSN: | 0925-9864 1573-5109 |
DOI: | 10.1007/s10722-019-00868-5 |