Genetic basis of traits related to stomatal conductance in wheat cultivars in response to drought stress

Title:

Genetic basis of traits related to stomatal conductance in wheat cultivars in response to drought stress

Creator:

Wang, S. G., Jia, S. S., Sun, D. Z., Wang, H. Y., Dong, F. F., Ma, H. X., Jing, R. L., and Ma, G.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:a4705538-ecf2-4e58-b5e6-1316dad0b2ac
uuid:a4705538-ecf2-4e58-b5e6-1316dad0b2ac
issn:0300-3604
doi:10.1007/s11099-015-0114-5

Subject:

fotosyntéza, pšenice, photosynthesis, wheat, drought stress, photosynthetic rate, quantitative trait loci, stomatal conductance, transpiration rate, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

The genetic basis of stomatal conductance (gs), net photosynthetic rate (PN), and transpiration rate (E) was explored by using a wheat doubled haploid population from a cross of Hanxuan10 and Lumai 14. The above three traits were evaluated in wheat flag leaves at 10, 20, 30 days after anthesis under drought stress (DS) and well-watered (WW), and quantitative trait loci (QTL) were analyzed. Expression of the traits during the grain filling stage showed downward trends under both conditions, but expression of three phenotypes were stronger under WW than those under DS. Extremely significant positive correlations were established among the traits at all growth stages under both conditions. A total of 18 additive QTLs for those traits were identified on 10 chromosomes. Among them, two batches of nine additive QTLs were associated with the target traits under DS and WW, respectively. Two additive QTLs for gs and E, two for gs and PN, six for gs, PN, and E clustered at the same or near the region (colocation) of chromosomes 4A, 2B, and 7B, respectively. This provided genetic basis for close phenotype correlations among gs, PN, and E. Furthermore, QTLs for gs, PN, and E near Xgwm577 and Xgwm611 located on 7B chromosome were linked to previously reported QTLs regulating a SPAD value and the chlorophyll a/b ratio under dark-induced condition. This finding indicated that these QTLs on 7B chromosome might be involved in the process of wheat leaf senescence., S. G. Wang, S. S. Jia, D. Z. Sun, H. Y. Wang, F. F. Dong, H. X. Ma, R. L. Jing, G. Ma., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

299-305

Source:

Photosynthetica | 2015 Volume:53 | Number:2

Harvested from:

CDK

Metadata only:

false