Genetic diversity of soft spring wheat in resistance to early drought

Амунова, О. С.; Тиунова, Л. Н.

doi:10.30766/2072-9081.2018.62.1.32-37

Cited by 3 publications

(2 citation statements)

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“…The same situation exists with the resistance to abiotic stress under study: more than a thousand accessions and samples were screened, and genotypes with a high level of Al 3+ tolerance were selected only with a low frequency [ 33 , 34 , 35 ].…”

Section: Discussionmentioning

confidence: 99%

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Genetic Diversity for Effective Resistance in Wheat Landraces from Ethiopia and Eritrea to Fungal Diseases and Toxic Aluminum Ions

Zuev,

Lebedeva,

Yakovleva

et al. 2024

Plants

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To reveal genetic diversity for effective resistance to five foliar diseases and toxic aluminum ions, the entire collection of wheat species from the N.I. Vavilov All-Russian Institute of Plant Genetic Resources (VIR) originating from Ethiopia and Eritrea were studied regarding their traits. The collection contains 509 samples of four wheat species (Triticum aestivum—122 samples; T. aethiopicum—340 samples; T. polonicum—6 samples; and T. dicoccum—41 samples). The majority of accessions are new entries of landraces added to the Vavilov collection as a result of the Russian–Ethiopian expedition in 2012. Wheat seedlings were inoculated with causal agents of leaf rust (Pt), powdery mildew (Bgt), Septoria nodorum blotch (SNB), and dark-brown leaf spot blotch (HLB). The types of reaction and disease development were assessed to describe the levels of resistance. All samples of T. aethiopicum were also screened for seedling and adult resistance to Pt, Bgt, and yellow rust (Pst) under field conditions after double inoculation with the corresponding pathogens. To study tolerance to abiotic stress, seedlings were grown in a solution of Al3+ (185 µM, pH 4,0) and in water. The index of root length was used to characterize tolerance. Seedlings belonging to only two accessions out of those studied—k-68236 of T. aethiopicum and k-67397 of T. dicoccum—were resistant to Pt at 20 °C but susceptible at 25 °C. Specific molecular markers closely linked to the five genes for Pt resistance effective against populations of the pathogen from the northwestern region of Russia were not amplified in these two entries after PCR with corresponding primers. Four entries of T. dicoccum—k-18971, k-18975, k-19577, and k-67398—were highly resistant to Bgt. All samples under study were susceptible to HLB and SNB. Under field conditions, 15% of the T. aethiopicum samples were resistant to Pst, both at the seedling and the flag leaf stages, but all were susceptible to the other diseases under study. Among the evaluated samples, 20 entries of T. aestivum, 1 of T. polonicum (k-43765), and 2 of T. dicoccum (k-18971, k-67397) were tolerant to aluminum ions. The identified entries could be valuable sources for the breeding of T. aestivum and other wheats for resistance to biotic and abiotic stresses.

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Section: Discussionmentioning

confidence: 99%

“…The tolerance of bread wheat from the VIR collection to Al 3+ was studied for more than a thousand accessions, and samples with a high level of the trait were found, but with only a low frequency [ 33 , 34 , 35 ]. So, the search for new samples with a high tolerance to this abiotic stressor is of great interest.…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity for Effective Resistance in Wheat Landraces from Ethiopia and Eritrea to Fungal Diseases and Toxic Aluminum Ions

Zuev,

Lebedeva,

Yakovleva

et al. 2024

Plants

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Level of Adaptability of Starting Material for Breeding Spring Soft Wheat in Ryazan Region

Barkovskaya,

Gladysheva

2024

Vestnik of Kazan State Agrarian University

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The studies were conducted with the aim of a comprehensive assessment of spring soft wheat varieties of various maturity groups in terms of the level of disclosure of adaptive potential with the identification of valuable ones for use in breeding. The work was carried out in Ryazan region in 2018-2023. The material for the study was mid-early and mid-season foreign varieties Odeta, Sable, Kanyuk, Kalispero, KVS Torridon, KVS Aquilon, Ethos, CH Rubli, Etyud, as well as domestic varieties Zlata, Burlak, Agata, Gerakl, Omskaya 36, Margarita. Calculation of the parameters of adaptability, plasticity and stability was carried out according to the methods of A.A. Rossielle, J. Hemblin, L.A. Zhivotkov et al., E.D. Nettevich et al., V.A. Zykin, V.V. Khangildin. The soil of the plot is dark gray forest heavy loamy, of medium fertility. The weather conditions during the period were contrasting, typical of the Central Non-Black Earth Region. The yield of the mid-early group of varieties was within 3.57 ... 6.73 t/ha, mid-season - 3.33 ... 7.06 t/ha. High adaptive capacity was characterized by the mid-early variety Odeta, mid-season KVS Akvilon, Kanyuk, Kalispero, KVS Torridon. On average, over the years of research, their productivity was 5.51...5.95 t/ha, exceeding the average variety productivity in their maturity groups by 6.7...17.5%. At the same time, they had high indicators of compensatory capacity ((Y2+Y1)/2) - 5.62...5.95 t/ha, selection value (Sc) - 3.80...4.22 and variety stability level (VSL) - 103.2...156.2%. According to the comprehensive rating for the totality of all adaptability features, the best mid-early varieties were Zlata and Odeta with a rank sum of 21, mid-season varieties - Kanyuk, KVS Akvilon, KVS Torridon, Kalispero with a rank sum of 14...40.

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Contribution of yield structure elements to the winter wheat productivity formation at different moisture availability

Lobunskaya,

Gaze,

Kostylev

et al. 2023

Zernovoe hozâjstvo Rossii

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The current paper has presented the experimental results of estimating the influence of moisture availability on productivity and yield structure elements of the winter wheat varieties. There have been studied 11 winter common wheat varieties of a semi-intensive type developed in the FSBSI “ARC “Donskoy”. The purpose of the study was to determine the influence of different soil moisture levels on the yield and its structural elements of winter wheat. The varieties were tested in laboratory conditions by simulating soil drought (sucrose solution was with an osmotic pressure of 16 atmospheres), as well as on a vegetation plot “zasushnik” with optimal and insufficient moisture. When determining potential drought resistance based on the ‘seed germination’ indicator, the studied varieties were divided into three resistance groups. The varieties ‘Ayuta’ (83.3 %) and ‘Volnitsa’ (82.1 %) were highly drought-resistant, which significantly exceeded the standard variety ‘Don 107’ (70.3 %) (НСР05 ± 6.0 %). The estimation of varieties in contrasting moisture conditions made it possible to identify stable yield traits, such as ‘length of a head’, ‘number of grains per main head’ and ‘grain weight per main head’, and ‘1000-grain weight’. High depression values under drought conditions were established according to ‘number of productive stems’, ‘length of a head’ and ‘1000-grain weight’ (6.5; 7.0; 12.0 %, respectively). There has been found a correlation between the laboratory and vegetation estimation of the trial. The correlation coefficient between resistance to lack of moisture in soil (number of viable seeds) and a depression degree of yield indicators (‘number of productive stems’, ‘length of a head’, ‘number of grains per main head’, ‘grain weight per main head’, ‘1000-grain weight’) ranged from 0.32 to 0.98. There have been identified the varieties ‘Zhavoronok’, ‘Polina’, ‘Premiera’ and ‘Podarok Krymu’, combining laboratory drought resistance with a complex of productivity traits.

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Genetic diversity of soft spring wheat in resistance to early drought

Cited by 3 publications

References 1 publication

Genetic Diversity for Effective Resistance in Wheat Landraces from Ethiopia and Eritrea to Fungal Diseases and Toxic Aluminum Ions

Genetic Diversity for Effective Resistance in Wheat Landraces from Ethiopia and Eritrea to Fungal Diseases and Toxic Aluminum Ions

Level of Adaptability of Starting Material for Breeding Spring Soft Wheat in Ryazan Region

Contribution of yield structure elements to the winter wheat productivity formation at different moisture availability

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