Identification of ISSR and RAPD markers linked to yield traits in bread wheat under normal and drought conditions

Field experiment was conducted to study the effect of water stress on yield and yield traits of durum wheat and bread wheat genotypes. Water stress caused significant reduction in plant height (PH), peduncle length (PL), spike number/m2(SN), spike length (SL), spike width (SW), spikelets number/spike (SNS), spike mass (SM), grain number/spike (GNS), grain mass/spike (GMS), biological yield (BY), thousand kernel mass (TKM), grain yield (GY) and harvest index (HI). Wheat traits such as SN, SM, BY, TKM, GY were more vulnerable to drought stress. Positive significant correlation of GY with SN, BY and HI under rain-fed condition was found. Genotypes of durum wheat were more sensitive to drought than that bread wheat genotypes. The significant and positive correlation of GY with Stress Tolerance Index (STI), Mean Productivity (MP) and Geometric Mean Productivity (GMP) indicated that these indices were more effective in identifying high yielding, drought tolerance genotypes.

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LINE BY TESTER COMBINING ABILITY ANALYSIS FOR EARLINESS AND YIELD TRAITS IN BREAD WHEAT (TRITICUM AESTIVUM L.)

The Journal of Animal and Plant Sciences - February ◽

10.36899/japs.2021.2.0242 ◽

2020 ◽

Vol 31 (2) ◽

Keyword(s):

Triticum Aestivum ◽

Bread Wheat ◽

Combining Ability ◽

Triticum Aestivum L ◽

Yield Traits ◽

Combining Ability Analysis

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A GBS-based GWAS analysis of adaptability and yield traits in bread wheat (Triticum aestivum L.)

Journal of Applied Genetics ◽

10.1007/s13353-020-00593-1 ◽

2020 ◽

Author(s):

Saba Akram ◽

Mian Abdur Rehman Arif ◽

Amjad Hameed

Keyword(s):

Triticum Aestivum ◽

Bread Wheat ◽

Triticum Aestivum L ◽

Yield Traits ◽

Gwas Analysis

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Estimating genetic diversity in Greek durum wheat landraces with RAPD markers

Australian Journal of Agricultural Research ◽

10.1071/ar04245 ◽

2005 ◽

Vol 56 (12) ◽

pp. 1355 ◽

Cited By ~ 9

Author(s):

Anna Mantzavinou ◽

Penelope J. Bebeli ◽

Pantouses J. Kaltsikes

Keyword(s):

Genetic Diversity ◽

Durum Wheat ◽

Bread Wheat ◽

Rapd Markers ◽

Triticum Turgidum ◽

Random Amplified Polymorphic Dna ◽

Triticum Aestivum L ◽

The Other ◽

Wheat Cultivars ◽

Arbitrary Primers

Using the random amplified polymorphic DNA (RAPD) method, the genetic diversity of 19 Greek landraces and 9 cultivars of durum wheat [Triticum turgidum L. var. durum (Desf.)] was studied. Two commercial bread wheat (Triticum aestivum L.) cultivars and one genotype of Triticum monococcum L. were also included in the study. Eighty-seven arbitrary primers (10-mer) were evaluated in a preliminary experiment and 15 of them were selected for the main experiments based on the quality and reliability of their amplification and the polymorphism they revealed. A total of 150 DNA bands were obtained, 125 (83.3%) of which were polymorphic. On average, 10 DNA bands were amplified per primer, 8.3 of which were polymorphic. The genetic similarity between all pairs of genotypes was evaluated using the Jaccard’s or Nei and Li’s coefficients; the values of the former ranged from 0.153 to 0.973 while those of the latter were slightly higher (0.265–0.986). Cluster analysis was conducted by the UPGMA and the Njoin methods. Both methods broadly placed 26 durum genotypes into 1 branch while the other branch consisted of 2 subgroups: 1 included the 2 bread wheat cultivars; the other 1 consisted of 2 durum landraces, ‘Kontopouli’ and ‘Mavrotheri-Chios’, which showed an intruiging behaviour sharing bands with the bread wheat cultivars. The T. monococcum cultivar stood apart from all other genotypes.

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