Received: DecemAccepted: MaPublished: May 4, 2022Ĭopyright: © 2022 Asghar et al. PLoS ONE 17(5):Įditor: Adnan Noor Shah, Anhui Agricultural University, CHINA (2022) Evaluation of Pakistani wheat germplasm for leaf rust resistance at various locations. The advance line V-14154 has been approved as a commercial cultivar by the name “Akbar-19”.Ĭitation: Asghar S, Rehman AU, Ahmad N, Ajmal S, Ahsan A, Gulnaz S, et al.
Similarly, HYT 60–5 has proven an excellent source of resistance. Varieties/advanced lines, Ujala-16, V-14154, and V-14124 have shown slow rust development and are very good sources of resistance. Material with AUDPC value less than 10 is the best source of resistance against the leaf rust. Area under disease progressive curve/Day (AUDPC/DAY) was calculated for the rest of 130 genotypes to have an understanding of the disease progression pattern and out of which 43 entries have AUDPC/Day value ranging from 1–2 and 28 entries have AUDPC/Day value ranging from 2–3 which revealed that these entries are very useful for use in breeding for durable rust resistance and can be utilized as a parent in back cross and top cross breeding schemes. 120 entries including HYT 60–5 have disease progression 0, which showed that there may be a major gene based resistance in these entries. Area under disease progressive curve (AUDPC), calculated on the basis of periodical readings from Faisalabad, ranged from 0–550 and the susceptible check Morocco has AUDPC value of 600.
These genes can be used for future breeding material development. The genotype HYT 60–5 and the genes Lr-19, Lr-26 and Lr 27+31 showed no disease symptoms at any location during both the study years. The disease severity ranged from 0-100S during 2016–17 and from 0-80S during 2017–18. Data on leaf rust severity was recorded once in 3 rd week of March during both study years at all locations by following Modified Cobb Scale while the data was recorded three times on 2 nd, 22 nd and 29 th March during 2018 at Faisalabad location to study rust development pattern. Each entry was planted in a single 1 m long row and Morocco was used as a spreader. 341 entries comprising of 250 genotypes/lines and 91 gene differentials were tested for leaf rust ( Puccinia triticina Erik) in different ecological zones of Punjab during 2016––18.
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