Dependence of Yields of Wheat Varieties on their Leaf Area Durations
- 1 April 1966
- journal article
- research article
- Published by Oxford University Press (OUP) in Annals of Botany
- Vol. 30 (2) , 291-299
- https://doi.org/10.1093/oxfordjournals.aob.a084075
Abstract
In a field experiment three wheat varieties: autumn-sown Cappelle Desprez, Prestige, both autumn-sown and spring-sown, and spring-sown Jufy I, each supplied with 0.5 or 1.0 cwt nitrogen/acre (63 or 126 kg/ha), had grain yields nearly proportional to their Leaf Area Durations (D) during grain development. Squarehead's Master had a smaller grain yield relative to its total D, but with 0.5 cwt N/acre the ratio of its grain yield to D of parts above the flag leaf node (DF) was similar to the other varieties. The difference in this ratio between varieties was less when DFwas calculated from anthesis than from ear emergence to ripening. Squarehead’s Master with 1.0 cwt N/acre had a smaller ratio of grain yield to DF than other treatments, implying less grain per ear relative to DY per shoot, perhaps because of lodging, or because factors limiting size of ears restricted their ability to accept all the assimilate the shoots could produce with this amount of N.This publication has 2 references indexed in Scilit:
- Photosynthesis of Ears and Flag Leaves of Wheat and BarleyAnnals of Botany, 1965
- The Translocation of C14‐Labelled Photosynthetic Products from the Leaf to the Ear in WheatPhysiologia Plantarum, 1963