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https://open.uns.ac.rs/handle/123456789/5848
Nаziv: | RESPONSES of WHEAT PLANTS under POST-ANTHESIS STRESS INDUCED by DEFOLIATION: I. CONTRIBUTION of AGRO-PHYSIOLOGICAL TRAITS to GRAIN YIELD | Аutоri: | Dodig D. Savičić, Jovan Kandic V. Zorić, Martina Vucelic Radovic B. Popović, Aleksandra Quarrie S. |
Dаtum izdаvаnjа: | 1-апр-2016 | Čаsоpis: | Experimental Agriculture | Sažetak: | Copyright © Cambridge University Press 2015. 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. | URI: | https://open.uns.ac.rs/handle/123456789/5848 | ISSN: | 00144797 | DOI: | 10.1017/S0014479715000034 |
Nаlаzi sе u kоlеkciјаmа: | ILFE Publikacije/Publications |
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