Inheritance and chromosome location of leaf rust resistance in durum wheat cultivar Wollaroi

Singh, Baljit; Bansal, Urmil; Forrest, Kerrie; Hayden, Matthew; Hare, Ray A.; Bariana, Harbans

doi:10.1007/s10681-010-0179-y

Cited by 13 publications

(10 citation statements)

References 22 publications

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“…This Pt isolate was first reported in South Australia in 2000 [ 42 ] and is virulent for Lr1, Lr3a, Lr14a, Lr16, Lr17a, Lr20, Lr24 and Lr27 resistance genes. This Pt isolate was used due to the absence of durum specific Pt pathotypes in Australia and since LR disease on durum wheat crops in Australia is caused by bread wheat pathotypes [ 43 ].…”

Section: Methodsmentioning

confidence: 99%

Speed breeding for multiple quantitative traits in durum wheat

et al. 2018

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BackgroundPlant breeding requires numerous generations to be cycled and evaluated before an improved cultivar is released. This lengthy process is required to introduce and test multiple traits of interest. However, a technology for rapid generation advance named ‘speed breeding’ was successfully deployed in bread wheat (Triticum aestivum L.) to achieve six generations per year while imposing phenotypic selection for foliar disease resistance and grain dormancy. Here, for the first time the deployment of this methodology is presented in durum wheat (Triticum durum Desf.) by integrating selection for key traits, including above and below ground traits on the same set of plants. This involved phenotyping for seminal root angle (RA), seminal root number (RN), tolerance to crown rot (CR), resistance to leaf rust (LR) and plant height (PH). In durum wheat, these traits are desirable in environments where yield is limited by in-season rainfall with the occurrence of CR and epidemics of LR. To evaluate this multi-trait screening approach, we applied selection to a large segregating F2 population (n = 1000) derived from a bi-parental cross (Outrob4/Caparoi). A weighted selection index (SI) was developed and applied. The gain for each trait was determined by evaluating F3 progeny derived from 100 ‘selected’ and 100 ‘unselected’ F2 individuals.ResultsTransgressive segregation was observed for all assayed traits in the Outrob4/Caparoi F2 population. Application of the SI successfully shifted the population mean for four traits, as determined by a significant mean difference between ‘selected’ and ‘unselected’ F3 families for CR tolerance, LR resistance, RA and RN. No significant shift for PH was observed.ConclusionsThe novel multi-trait phenotyping method presents a useful tool for rapid selection of early filial generations or for the characterization of fixed lines out-of-season. Further, it offers efficient use of resources by assaying multiple traits on the same set of plants. Results suggest that when performed in parallel with speed breeding in early generations, selection will enrich recombinant inbred lines with desirable alleles and will reduce the length and number of years required to combine these traits in elite breeding populations and therefore cultivars.Electronic supplementary materialThe online version of this article (10.1186/s13007-018-0302-y) contains supplementary material, which is available to authorized users.

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Section: Methodsmentioning

confidence: 99%

Speed breeding for multiple quantitative traits in durum wheat

et al. 2018

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“…Resistance in Australian durum ʽWollaroi' (Singh et al. ) and Italian ʽTrinakria' (Gireesh et al. ) was in each instance controlled by a dominant gene thought to be Lr52 or an allele or a closely linked gene.…”

Section: Discussionmentioning

confidence: 99%

Sources of resistance to Indian pathotypes of Puccinia graminis tritici and P. triticina in durum wheat

et al. 2015

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Stem rust and leaf rust are important diseases affecting durum wheat production in India. Inheritance and extent of diversity in resistance were studied in five durum genotypes, viz. ʽB 662', ʽED 2398-A', ʽHG 110', ʽIWP 5019' and ʽLine 1172ʼ using Pgt pathotypes 40A and 117-6, and Pt pathotypes 12-2 and 104-2. F 2 and F 3 analyses showed that resistance was conferred by one or two genes in each line. In all, four genes for resistance to 40A, and eight each for pathotypes 117-6 and 12-2 were identified among the five genotypes, and three for resistance to 104-2 among B 662, ED 2398-A and IWP 5019 were indicated by tests of allelism. Although the gene identities are not known, at least some of them should be different from Sr2, Sr7b, Sr8a, Sr8b, Sr9e, Sr9g, Sr11, Sr12, Sr13, Sr14, Sr17, Sr23 and Sr28; and from Lr3, Lr14a, Lr23 and Lr27 + Lr31. These genotypes enrich the diversity of resistance to stem rust and leaf rust for durum wheat improvement.Key words: genetic diversity -Lr genes -resistance durability -Sr genes -Triticum turgidum ssp. durum India produces more than 90 million tonnes of wheat from an area of more than 25 million hectares, to which the contribution of durum wheat is about 5%. However, durum wheat has a special niche in the Indian wheat economy for at least two reasons: firstly, Indian durum is typically purchased by private traders at a premium price, mainly for processing high-value products; secondly, durum is preferred over bread wheat for several local food preparations. Durum and cultivated emmer are mainly grown in the central and southern parts, where leaf rust and stem rust are the major disease problems affecting wheat. Broadening the resistance base through the utilization of genetically diverse resistance sources is necessary to enhance the durability of resistance to meet ongoing threats from the continuously evolving rust pathogens. Relatively, little work has been done on the inheritance of rust resistance in durum, compared to bread wheat. However, studies conducted in different parts of the world indicate that durum generally shows resistance to Puccinia triticina (Pt) pathotypes virulent to bread wheat and vice versa

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“…К сожалению, отсутствие молекулярного маркера для данного гена не позволило провести его идентификацию у материала КА-СИБ. Наряду с геном Lr23 у сортов T. durum зарубежной селекции выявлена широкая представленность генов Lr1, Lr2, Lr3, Lr10, Lr13, Lr14a, Lr16, Lr17a, Lr27+Lr31, Lr46, Lr47, Lr52, Lr61, Lr64 и Lr72 (Zhang, Knott 1990;Singh et al, 1993, Dyck, 1994Dubcovsky et al, 1998;Aguilar-Rincon et al, 2001;Herrera-Foessel et al, 2007, 2008b, 2011, 2014McIntosh et al, 2009;Singh et al, 2010). Результаты молекулярного анализа в данной работе указывают на отсутствие генов Lr1, Lr3, Lr10, Lr47 у изученного материала КАСИБ-2019.…”

Section: результатыunclassified

Resistance of Perspective Spring Durum Wheat Samples to Foliar Diseases

Rsaliyev¹,

Gultyaeva²,

Мальчиков³

et al. 2020

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Листостебельные болезни (ржавчина и пятнистости) вредоносны для яровой твердой пшеницы во всех зонах ее выращивания. Целью исследований являлась иммунологическая оценка 25 перспективных сортов и линий яровой твердой пшеницы к листостебельным болезням в фазе проростков и взрослых растений и идентификация у них генов устойчивости. Изучаемый материал получен из Казахстанско-Сибирской сети улучшения яровой пшеницы (КАСИБ) в 2019 г. Оценку устойчивости к бурой, стеблевой и желтой ржавчинам проводили на инфекционном участке НИИ проблем биологической безопасности (Южный Казахстан), к пиренофорозу-на экспериментальном участке Самарского НИИСХ им. Тулайкова. В фазе проростков изучили устойчивость к географически отдаленным популяциям возбудителей бурой, стеблевой и желтой ржавчины и пиренофороза. Молекулярные маркеры использовали для идентификации генов Lr, Sr, Yr и доминантной аллели гена восприимчивости к пиренофорозу Tsn1. В полевых условиях реакцией устойчивости к пиренофорозу и ржавчинам характеризовались линии 1693д-71, 2021д-1, Гордеиформе 1591-21 (Самарский НИИСХ), Д-2165 (НИИСХ ЮВ), Гордеиформе 08-107-5 (СибНИИСХ); к трем видам ржавчины-линия №9 (Карабалыкская СХОС), к двум видам (бурой и стеблевой)-линия Гордеиформе 08-67-1 (СибНИИСХ). У линий Гордеиформе 1591-21, Гордеиформе 08-107-5 и Гордеиформе 08-67-1 устойчивость к болезням в фазе взрослых растений коррелировала с устойчивостью в фазе проростков. Число резистентных к болезням образцов твердой пшеницы в российском материале было выше, чем в казахстанском. С использованием молекулярных маркеров у сортов твердой пшеницы не выявлены гены Lr1,

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Inheritance and chromosome location of leaf rust resistance in durum wheat cultivar Wollaroi

Cited by 13 publications

References 22 publications

Speed breeding for multiple quantitative traits in durum wheat

Speed breeding for multiple quantitative traits in durum wheat

Sources of resistance to Indian pathotypes of Puccinia graminis tritici and P. triticina in durum wheat

Resistance of Perspective Spring Durum Wheat Samples to Foliar Diseases

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