Stay-green trait-antioxidant status interrelationship in durum wheat (Triticum durum) flag leaf during post-flowering

2013 ◽  
Vol 127 (1) ◽  
pp. 159-171 ◽  
Author(s):  
Vanessa De Simone ◽  
Mario Soccio ◽  
Grazia Maria Borrelli ◽  
Donato Pastore ◽  
Daniela Trono
Keyword(s):  
Durum Wheat ◽  
Triticum Durum ◽  
Antioxidant Status ◽  
Flag Leaf ◽  
Stay Green

scholarly journals Inheritance of plant height, straw yield and flag leaf area in MBB x Gaviota durum wheat (Triticum durum Desf.) cross

2021 ◽  
Vol 117 (4) ◽  
pp. 1
Author(s):  
Manel SALMI ◽  
Zine El Abidine FELLAHI ◽  
Abdelkader BENBELKACEM ◽  
Amar BENMAHAMMED ◽  
Hamenna BOUZERZOUR
Keyword(s):  
Durum Wheat ◽  
Leaf Area ◽  
Plant Height ◽  
Triticum Durum ◽  
Gene Action ◽  
Flag Leaf ◽  
Genetic Correlations ◽  
Arid Zones ◽  
Breeding Method ◽  
Consistent Manner

<p class="042abstractstekst">Plant height, straw mass and flag leaf area are recognized by physiologists as morphological markers of drought stress tolerance. Developing varieties intended for arid and semi-arid zones need to select for these traits. Understanding the genetic control of a given trait helps breeder to handle the segregating populations under study in a more efficient and consistent manner by choosing the best breeding method available to realize significant genetic advance. For this purpose, six generations: parents, F1, F2, BC1, BC2, derived from MBB x ‘Gaviota’ durum wheat (<em>Triticum durum </em>Desf.) cross were grown to investigate the nature of gene action involved in the inheritance pattern of the three traits. The results indicated that the six-parameter model fitted the best the data related to the variability present in the generation means of the studied traits. Generation mean analysis indicated that non-allelic interactions were important factors controlling the expression of these characters with complementary type of gene action governing FLA and STW inheritance. High heritability estimates, moderate to high expected responses to selection, significant genetic correlations with grain yield and greater role of non-additive effects in controlling the inheritance of the three studied traits suggested that breeding methods exploiting both fixable and non-fixable components be applied to break unfavorable linkage and to accumulate useful genes in the base population, followed by mono-trait or index based selection in late advanced generations.</p>

Effects of Exogenous ABA and 6-BA on Flag Leaf Senescence in Different Types of Stay-Green Wheat and Relevant Physiological Mechanisms

2013 ◽  
Vol 39 (6) ◽  
pp. 1096 ◽  
Author(s):  
Dong-Qing YANG ◽  
Zhen-Lin WANG ◽  
Yan-Ping YIN ◽  
Ying-Li NI ◽  
Wei-Bing YANG ◽  
...  
Keyword(s):  
Leaf Senescence ◽  
Flag Leaf ◽  
Physiological Mechanisms ◽  
Stay Green ◽  
Exogenous Aba ◽  
Different Types

scholarly journals Abiotic Stress Response of Near-Isogenic Spring Durum Wheat Lines under Different Sowing Densities

2021 ◽  
Vol 22 (4) ◽  
pp. 2053
Author(s):  
Judit Bányai ◽  
Marco Maccaferri ◽  
László Láng ◽  
Marianna Mayer ◽  
Viola Tóth ◽  
...  
Keyword(s):  
Drought Stress ◽  
Durum Wheat ◽  
Chlorophyll Content ◽  
Vegetation Index ◽  
Flag Leaf ◽  
Kernel Weight ◽  
Grain Weight ◽  
Abiotic Stress Response ◽  
Grain Number ◽  
Isogenic Lines

A detailed study was made of changes in the plant development, morphology, physiology and yield biology of near-isogenic lines of spring durum wheat sown in the field with different plant densities in two consecutive years (2013–2014). An analysis was made of the drought tolerance of isogenic lines selected for yield QTLs (QYld.idw-2B and QYld.idw-3B), and the presence of QTL effects was examined in spring sowings. Comparisons were made of the traits of the isogenic pairs QYld.idw-3B++ and QYld.idw-3B−− both within and between the pairs. Changes in the polyamine content, antioxidant enzyme activity, chlorophyll content of the flag leaf and the normalized difference vegetation index (NDVI) of the plot were monitored in response to drought stress, and the relationship between these components and the yield was analyzed. In the case of moderate stress, differences between the NIL++ and NIL−− pairs appeared in the early dough stage, indicating that the QYld.idw-3B++ QTL region was able to maintain photosynthetic activity for a longer period, resulting in greater grain number and grain weight at the end of the growing period. The chlorophyll content of the flag leaf in phenophases Z77 and Z83 was significantly correlated with the grain number and grain weight of the main spike. The grain yield was greatly influenced by the treatment, while the genotype had a significant effect on the thousand-kernel weight and on the grain number and grain weight of the main spike. When the lines were compared in the non-irrigated treatment, significantly more grains and significantly higher grain weight were observed in the main spike in NIL++ lines, confirming the theory that the higher yields of the QYld.idw-3B++ lines when sown in spring and exposed to drought stress could be attributed to the positive effect of the “Kofa” QTL on chromosome 3B.

Weed management using tillage, seed rate and bed planting in durum wheat (Triticum durum Desf.) under an organic agriculture system

2021 ◽  
Author(s):  
Hasamuddin Hasam ◽  
Simerjeet Kaur ◽  
Harinderjeet Kaur ◽  
Navjyot Kaur ◽  
Tarundeep Kaur ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Organic Agriculture ◽  
Weed Management ◽  
Triticum Durum ◽  
Seed Rate ◽  
Triticum Durum Desf
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