scholarly journals Physiological characterization of 'stay green' mutants in durum wheat

2003 ◽  
Vol 54 (386) ◽  
pp. 1415-1420 ◽  
Author(s):  
G. Spano
Keyword(s):  
Durum Wheat ◽  
Stay Green ◽  
Physiological Characterization

scholarly journals Physiological Characterization of Two Genes for Na+ Exclusion in Durum Wheat, Nax1 and Nax2

2006 ◽  
Vol 142 (4) ◽  
pp. 1537-1547 ◽  
Author(s):  
Richard A. James ◽  
Romola J. Davenport ◽  
Rana Munns
Keyword(s):  
Durum Wheat ◽  
Physiological Characterization

Molecular and physiological characterization of Arabidopsis‐Colletotrichum gloeosporioides pathosystem

2021 ◽  
Author(s):  
Mengze Gao ◽  
Miting Wan ◽  
Liyun Yang ◽  
Meng Zhao ◽  
Xiaojin Liu ◽  
...  
Keyword(s):  
Colletotrichum Gloeosporioides ◽  
Physiological Characterization

scholarly journals A New Breeding Strategy towards Introgression and Characterization of Stay-Green QTL for Drought Tolerance in Sorghum

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 598
Author(s):  
Nasrein Mohamed Kamal ◽  
Yasir Serag Alnor Gorafi ◽  
Hanan Abdeltwab ◽  
Ishtiag Abdalla ◽  
Hisashi Tsujimoto ◽  
...  
Keyword(s):  
Phenotypic Expression ◽  
Phenotypic Selection ◽  
Breeding Strategy ◽  
Stay Green ◽  
Breeding Programs ◽  
The Public ◽  
Drought Tolerant ◽  
Selection Step ◽  
The Cost

Several marker-assisted selection (MAS) or backcrossing (MAB) approaches exist for polygenic trait improvement. However, the implementation of MAB remains a challenge in many breeding programs, especially in the public sector. In MAB introgression programs, which usually do not include phenotypic selection, undesired donor traits may unexpectedly turn up regardless of how expensive and theoretically powerful a backcross scheme may be. Therefore, combining genotyping and phenotyping during selection will improve understanding of QTL interactions with the environment, especially for minor alleles that maximize the phenotypic expression of the traits. Here, we describe the introgression of stay-green QTL (Stg1–Stg4) from B35 into two sorghum backgrounds through an MAB that combines genotypic and phenotypic (C-MAB) selection during early backcross cycles. The background selection step is excluded. Since it is necessary to decrease further the cost associated with molecular marker assays, the costs of C-MAB were estimated. Lines with stay-green trait and good performance were identified at an early backcross generation, backcross two (BC2). Developed BC2F4 lines were evaluated under irrigated and drought as well as three rainfed environments varied in drought timing and severity. Under drought conditions, the mean grain yield of the most C-MAB-introgression lines was consistently higher than that of the recurrent parents. This study is one of the real applications of the successful use of C-MAB for the development of drought-tolerant sorghum lines for drought-prone areas.

scholarly journals Host Range of Streptomycete Strains Causing Common Scab

Plant Disease ◽  
1997 ◽  
Vol 81 (8) ◽  
pp. 901-904 ◽  
Author(s):  
Claudia Goyer ◽  
Carole Beaulieu
Keyword(s):  
Host Range ◽  
Daucus Carota ◽  
Dna Hybridization ◽  
Common Scab ◽  
Genetic Cluster ◽  
Dna Relatedness ◽  
Physiological Characterization ◽  
Genetic Clusters ◽  
High Level

Ten Streptomyces isolates from common scab lesions on carrots (Daucus carota) were characterized. Morphological and physiological characterization of the carrot isolates established that they were closely related to S. scabies. DNA-DNA hybridization studies were carried out between DNA from the carrot isolates and DNA from two potato strains belonging to the two genetic clusters of S. scabies. Most of the carrot isolates exhibited a high level of DNA relatedness (average of 90%) to strain EF-54, which belongs to genetic cluster 1 of S. scabies. Three carrot isolates could not be included in either S. scabies genetic cluster 1 or 2. The pathogenicity of six S. scabies isolates from potato or carrot, two isolates of S. caviscabies, and one isolate of S. acidiscabies was determined on potato, carrot, radish, beet, turnip, and parsnip. All S. scabies isolates were pathogenic on carrot and radish, but pathogenicity on beet, parsnip, turnip, and potato was variable. Even though S. acidiscabies and S. caviscabies until now have been isolated only from potato, we demonstrated that isolates of these species also could infect other crops, such as radish, carrot, parsnip, and turnip.

scholarly journals The Physiological Characterization of Connexin41.8 and Connexin39.4, Which Are Involved in the Striped Pattern Formation of Zebrafish

2015 ◽  
Vol 291 (3) ◽  
pp. 1053-1063 ◽  
Author(s):  
Masakatsu Watanabe ◽  
Risa Sawada ◽  
Toshihiro Aramaki ◽  
I. Martha Skerrett ◽  
Shigeru Kondo
Keyword(s):  
Pattern Formation ◽  
Striped Pattern ◽  
Physiological Characterization
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