When water stress develops post-anthesis, wheat (Triticum aestivum L.) plants have to rely increasingly on remobilization of previously stored assimilates to maintain grain filling. In two-year field trials, we studied more than 20 agronomic and developmental traits in 61 wheat genotypes (27 F4:5 families, 17 parents used for the crosses and 17 standards), comparing plants that were defoliated (DP) by cutting off all leaf blades 10 days after anthesis with intact control plants (CP). Estimated contributions of stem and sheath assimilate reserves to grain weight/spike were from 10-54% and from 24-84% in CP and DP plants, respectively. Stem-related traits were among key traits determining stem reserve contribution (SRC). The most important genetic variables in differentiating genotypes for stress tolerance were biomass/stem, stem reserves mobilization efficiency and grain filling rate (GFR). Balance among traits related to yield maintenance in DP were more important than their high value...s. In general F4: 5 families (FAM), that had been crossed to combine typical breeding traits such as biomass and yield components, showed better tolerance under moderate stress than standards and parents.
TY - JOUR
AU - Dodig, Dejan
AU - Kandić, Vesna
AU - Savić, Jasna
AU - Vucelic-Radović, Bijana
AU - Zorić, Miroslav
AU - Popović, Aleksandra
AU - Quarrie, Steve
PY - 2016
UR - http://rik.mrizp.rs/handle/123456789/648
AB - When water stress develops post-anthesis, wheat (Triticum aestivum L.) plants have to rely increasingly on remobilization of previously stored assimilates to maintain grain filling. In two-year field trials, we studied more than 20 agronomic and developmental traits in 61 wheat genotypes (27 F4:5 families, 17 parents used for the crosses and 17 standards), comparing plants that were defoliated (DP) by cutting off all leaf blades 10 days after anthesis with intact control plants (CP). Estimated contributions of stem and sheath assimilate reserves to grain weight/spike were from 10-54% and from 24-84% in CP and DP plants, respectively. Stem-related traits were among key traits determining stem reserve contribution (SRC). The most important genetic variables in differentiating genotypes for stress tolerance were biomass/stem, stem reserves mobilization efficiency and grain filling rate (GFR). Balance among traits related to yield maintenance in DP were more important than their high values. In general F4: 5 families (FAM), that had been crossed to combine typical breeding traits such as biomass and yield components, showed better tolerance under moderate stress than standards and parents.
PB - Cambridge Univ Press, New York
T2 - Experimental Agriculture
T1 - Responses of wheat plants under post-anthesis stress induced by defoliation: i. Contribution of agro-physiological traits to grain yield
VL - 52
IS - 2
SP - 203
EP - 223
DO - 10.1017/S0014479715000034
ER -
@article{
author = "Dodig, Dejan and Kandić, Vesna and Savić, Jasna and Vucelic-Radović, Bijana and Zorić, Miroslav and Popović, Aleksandra and Quarrie, Steve",
year = "2016",
url = "http://rik.mrizp.rs/handle/123456789/648",
abstract = "When water stress develops post-anthesis, wheat (Triticum aestivum L.) plants have to rely increasingly on remobilization of previously stored assimilates to maintain grain filling. In two-year field trials, we studied more than 20 agronomic and developmental traits in 61 wheat genotypes (27 F4:5 families, 17 parents used for the crosses and 17 standards), comparing plants that were defoliated (DP) by cutting off all leaf blades 10 days after anthesis with intact control plants (CP). Estimated contributions of stem and sheath assimilate reserves to grain weight/spike were from 10-54% and from 24-84% in CP and DP plants, respectively. Stem-related traits were among key traits determining stem reserve contribution (SRC). The most important genetic variables in differentiating genotypes for stress tolerance were biomass/stem, stem reserves mobilization efficiency and grain filling rate (GFR). Balance among traits related to yield maintenance in DP were more important than their high values. In general F4: 5 families (FAM), that had been crossed to combine typical breeding traits such as biomass and yield components, showed better tolerance under moderate stress than standards and parents.",
publisher = "Cambridge Univ Press, New York",
journal = "Experimental Agriculture",
title = "Responses of wheat plants under post-anthesis stress induced by defoliation: i. Contribution of agro-physiological traits to grain yield",
volume = "52",
number = "2",
pages = "203-223",
doi = "10.1017/S0014479715000034"
}
Dodig, D., Kandić, V., Savić, J., Vucelic-Radović, B., Zorić, M., Popović, A.,& Quarrie, S. (2016). Responses of wheat plants under post-anthesis stress induced by defoliation: i. Contribution of agro-physiological traits to grain yield.
Experimental Agriculture
Cambridge Univ Press, New York., 52(2), 203-223.
https://doi.org/10.1017/S0014479715000034
Dodig D, Kandić V, Savić J, Vucelic-Radović B, Zorić M, Popović A, Quarrie S. Responses of wheat plants under post-anthesis stress induced by defoliation: i. Contribution of agro-physiological traits to grain yield. Experimental Agriculture. 2016;52(2):203-223
Dodig Dejan, Kandić Vesna, Savić Jasna, Vucelic-Radović Bijana, Zorić Miroslav, Popović Aleksandra, Quarrie Steve, "Responses of wheat plants under post-anthesis stress induced by defoliation: i. Contribution of agro-physiological traits to grain yield" Experimental Agriculture, 52, no. 2 (2016):203-223,
https://doi.org/10.1017/S0014479715000034 .
