Relationship between fruiting efficiency and grain weight in durum wheat

Ferrante, Ariel, Savin, Roxana and Slafer, Gustavo A. (2015) Relationship between fruiting efficiency and grain weight in durum wheat. Field Crops Research, 177 109-116. doi:10.1016/j.fcr.2015.03.009

Author Ferrante, Ariel
Savin, Roxana
Slafer, Gustavo A.
Title Relationship between fruiting efficiency and grain weight in durum wheat
Journal name Field Crops Research   Check publisher's open access policy
ISSN 0378-4290
Publication date 2015-06
Sub-type Article (original research)
DOI 10.1016/j.fcr.2015.03.009
Open Access Status Not Open Access
Volume 177
Start page 109
End page 116
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Abstract Future increases in grain number may be achieved through improving fruiting efficiency (FE; grains set per unit spike dry weight at anthesis). In recent experiments it was found a negative relationship between the average weight of the grains and FE. The objective of this paper was to determine whether this negative relationship was constitutive (i.e. the increased FE caused all grains to be smaller) or resulted from the increased proportion of grains of smaller potential size. Four experiments, involving 8 different environmental conditions, were carried out during two consecutive growing seasons (2008–2009 and 2009–2010) in which two durum wheat cultivars contrasting in FE and average grain weight were compared. In these conditions we determined FE and carried out a comprehensive study analysing in detail the weights of each individual grain along each of the spikelets. Averaging all experimental conditions, there was a negative relationship between average grain weight (GW) and fruiting efficiency (FE). Donduro with low FE produced in average heavier grains than Vitron. However, when considering individual grains there were, in general, no differences in GW. Therefore, the negative relationship between average grain weight and FE would not be constitutive, and would mostly represent the increase in the proportion of distal grains within the spikelets or of grains from apical spikelets as a consequence of an increased FE, reducing the average size of the grain but mostly unaffecting the size of particular grains. This provides further and stronger support to the idea of using FE as a criterion to further raise yield potential in wheat breeding programmes.
Keyword Yield
Grain number
Yield components
Triticum durum
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Queensland Alliance for Agriculture and Food Innovation
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Citation counts: TR Web of Science Citation Count  Cited 3 times in Thomson Reuters Web of Science Article | Citations
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