caa a22 4500 605481148 CHVBK 20210128100419.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s11099-015-0114-5 doi (NATIONALLICENCE)springer-10.1007/s11099-015-0114-5 Genetic basis of traits related to stomatal conductance in wheat cultivars in response to drought stress [Elektronische Daten] [S. Wang, S. Jia, D. Sun, H. Wang, F. Dong, H. Ma, R. Jing, G. Ma] The genetic basis of stomatal conductance (g s), net photosynthetic rate (P N), 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 g s and E, two for g s and P N, six for g s, P N, 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 g s, P N, and E. Furthermore, QTLs for g s, P N, 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. The Institute of Experimental Botany, 2015 drought stress nationallicence photosynthetic rate nationallicence quantitative trait loci nationallicence stomatal conductance nationallicence transpiration rate nationallicence wheat nationallicence C i : intercellular CO2 concentration nationallicence cM : centimorgan nationallicence DHL : doubled haploid line nationallicence DS : drought stress nationallicence E : transpiration rate nationallicence ES : early grain-filling stage nationallicence g s : stomatal conductance nationallicence H10 : Hanxuan 10 nationallicence L14 : Lumai 14 nationallicence LOD : likelihood of odd nationallicence LS : late grain-filling stage nationallicence MS : middle grain-filling stage nationallicence P N : net photosynthetic rate nationallicence QTL : quantitative trait loci nationallicence WW : well watered nationallicence Wang S. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut Jia S. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut Sun D. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut Wang H. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut Dong F. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut Ma H. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut Jing R. Institute of Crop Science, Chinese Academy of Agricultural Sciences, 100081, Beijing, China aut Ma G. Wheat Research Institute, Shanxi Academy of Agricultural Sciences, 041000, Linfen, Shanxi, China aut Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/2(2015-06-01), 299-305 0300-3604 53:2<299 2015 53 11099 https://doi.org/10.1007/s11099-015-0114-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11099-015-0114-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang S. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut NATIONALLICENCE 700 1- Jia S. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut NATIONALLICENCE 700 1- Sun D. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut NATIONALLICENCE 700 1- Wang H. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut NATIONALLICENCE 700 1- Dong F. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut NATIONALLICENCE 700 1- Ma H. College of Agronomy, Shanxi Agricultural University, 030801, Taigu, Shanxi, China aut NATIONALLICENCE 700 1- Jing R. Institute of Crop Science, Chinese Academy of Agricultural Sciences, 100081, Beijing, China aut NATIONALLICENCE 700 1- Ma G. Wheat Research Institute, Shanxi Academy of Agricultural Sciences, 041000, Linfen, Shanxi, China aut NATIONALLICENCE 773 0- Photosynthetica The Institute of Experimental Biology of the Czech Academy of Sciences 53/2(2015-06-01), 299-305 0300-3604 53:2<299 2015 53 11099