Grain yield and yield components as affected by forage removal in winter and spring triticale

Royo, C.

doi:10.1046/j.1365-2494.1997.00054.x

Cited by 11 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, significant direct effects were revealed by the path coefficient analysis in all environments. Nevertheless, correlation and path coefficients analysis showed that kernel weight had the major effect on grain yield under cooler irrigated conditions, as found in previous works in the region (Royo, 1997; Royo and Tribó, 1997).…”

Section: Discussionsupporting

confidence: 79%

Evaluation of Grain Yield and Its Components in Durum Wheat under Mediterranean Conditions

et al. 2003

Self Cite

View full text Add to dashboard Cite

Grain yield of durum wheat (Triticum turgidum L. var. durum) under Mediterranean conditions is frequently limited by both high temperature and drought during grain growth. Path coefficient analyses, based on an ontogenetic diagram, were conducted to study grain yield formation under different temperature and moisture regimes across Spain. Six ICARDA–CIMMYT inbred lines and four Spanish commercial cultivars were grown during 1998 and 1999 at two temperature regimes (cool and warm) and under both rainfed and irrigated conditions. Path coefficient analysis revealed that grain yield under cooler conditions was mostly determined by kernel weight, whereas the number of spikes per square meter predominantly influenced grain production in the warmer environments. The number of kernels per spike had a significant contribution to grain yield, especially under drought stress conditions. These associations do not clearly appear in the simple correlation analysis. Compensatory effects among yield components were almost absent in the cooler environments, probably due to the relative availability of water and N during the critical phases of plant development. Contrarily, under warmer conditions, negative effects of the number of spikes per square meter were registered on both the number of kernels per spike and kernel weight. Path analysis appears to be a useful tool for understanding grain yield formation and provides valuable additional information for improving grain yield via selection for its yield components.

show abstract

Section: Discussionsupporting

confidence: 79%

Evaluation of Grain Yield and Its Components in Durum Wheat under Mediterranean Conditions

et al. 2003

Self Cite

View full text Add to dashboard Cite

show abstract

“…Here in Experiment 2, the two groups were sown too far apart (due to surface moisture conditions) or in Experiment 3 were sown on the same date, so key development phases did not coincide. Our results here add to many other studies that have found both different and similar responses to defoliation across wheat genotypes varying in their phenological development (Royo and Romagosa, 1996;Royo, 1997;McMullen and Virgona, 2009;Sprague et al, 2018). This lack of consistency suggests this is a problematic relationship to unravel experimentally as it is very difficult to isolate the environmental conditions from genotypic effects and their interactions.…”

Section: Genotype Effects On Grain Yield Response After Defoliationsupporting

confidence: 59%

“…However, relatively little has been done to understand the dynamics of regrowth and physiological factors and processes involved in recovery after grazing in different genotypes (Harrison et al, 2011b,c). Some experiments have found larger trade-offs between grazing and grain yield for spring cultivars than in slowerdeveloping winter cultivars (Sprague et al, 2018), while others have found similar responses in winter and spring types (Royo and Romagosa, 1996;Royo, 1997). Taller genotypes have been found to have less yield reduction from grazing than newer semidwarf cultivars, due to differences in susceptibility to lodging and yield potential (Winter and Thompson, 1990), but differences in growth habit amongst semi-dwarf genotypes (erect vs. prostrate) were not shown to differ in response to defoliation (Butchee and Edwards, 2013).…”

Section: Introductionmentioning

confidence: 99%

Interactions of Spring Cereal Genotypic Attributes and Recovery of Grain Yield After Defoliation

et al. 2020

View full text Add to dashboard Cite

Dual-purpose crops are grazed during their vegetative phase and allowed to regrow to produce grain. Grazing slow-developing winter cereals (wheat, barley, and triticale) is common, but there is also potential to graze faster-developing spring cereals used in regions with shorter-growing seasons. Defoliation in faster-developing genotypes has risks of larger yield penalties, however, little is known about genotypic characteristics that may improve recovery after grazing. Four experiments examined 7 spring wheat and 2 barley cultivars with differing physiological attributes (phenological development rate, putative capacity to accumulate soluble carbohydrates, and tillering capacity) that may influence the capacity of spring wheat to recover after defoliation. Defoliated and undefoliated crops were compared to assess physiological differences between cultivars including recovery of biomass, leaf area and radiation interception at anthesis, and subsequent crop grain yield and yield components. All genotypes had similar responses to defoliation treatments indicating that the physiological attributes studied played little part in mitigating yield penalties after defoliation. Despite some differences in yield components amongst cultivars, defoliation did not adversely affect cultivars with different yield component combinations under non-water limited conditions. Later and intense defoliation (around GS30/31) resulted in large yield penalties (40%) which reduced both grain number and kernel mass. However, earlier defoliation (before GS28) induced small or insignificant yield penalties. Defoliation often reduced canopy radiation interception and crop biomass at anthesis but this rarely translated into large yield penalties. These studies further demonstrate that shorter season spring cereals can provide valuable forage (up to 1.2 t DM/ha) for grazing during early vegetative growth without inducing large yield penalties. This study suggests that beyond appropriate phenology, there were no other specific characteristics of cultivars that improved the recovery after grazing. Hence farmers don't need specific dual-purpose cultivars and can still focus on those that optimize grain yield potential for a particular environment and sowing date. The timing and intensity of defoliation appear to be larger drivers of yield recovery in spring cereals and better understanding of these relationships are needed to provide grazing management guidelines that mitigate risk of yield penalties in dual-purpose cereal crops.

show abstract

“…Nevertheless, genotypic variability for the maximum length of the first tiller stem seems to be due more to the different tillering strategy of spring and winter triticale types than to phenology. The length of the first tiller was closer to the length of the main stem in winter types than in spring types, which supports the assumption of tillers playing a greater role in the yield formation in winter types than in spring types (Royo, 1997). The patterns of biomass (CDW) accumulation of spring and winter triticale were similar.…”

Section: Variabletsupporting

confidence: 73%

Growth Analysis of Five Spring and Five Winter Triticale Genotypes

Royo

Blanco

1999

Agronomy Journal

View full text Add to dashboard Cite

Little is known about the pattern of growth and biomass partitioning of spring and winter triticale (×Triticosecale Wittmack), although such information can aid in interpreting the results of field experiments and is an essential step in the development of crop simulation models. This study was conducted to analyze and compare the growth of five winter and five spring triticale genotypes over two years in northeast Spain. Plants were sampled at the main stages of the Zadoks scale, and biomass, LAI and their components, and stem elongation were determined. The relationships between all the growth traits studied and accumulated growing degree‐days from sowing (GDD) were described by the same asymmetric logistic peak curve. Genotypic variability could be mainly associated with plant phenology. On average, winter triticale types needed 165 more GDD than spring types to reach maximum LAI. Also, winter triticale genotypes needed 190 more GDD to complete their main stem elongation, and 109 more GDD to reach their maximum rate of dry weight accumulation in the stems than spring genotypes did. The length of the first tiller was closer to the length of the main stem in winter types than in spring types. Both types of triticale had similar patterns of biomass accumulation. The asymmetric logistic peak curve used in this work fitted asymptotic and peak‐type relationships, and can be a useful tool for growth studies.

show abstract

Grain yield and yield components as affected by forage removal in winter and spring triticale

Cited by 11 publications

References 17 publications

Evaluation of Grain Yield and Its Components in Durum Wheat under Mediterranean Conditions

Evaluation of Grain Yield and Its Components in Durum Wheat under Mediterranean Conditions

Interactions of Spring Cereal Genotypic Attributes and Recovery of Grain Yield After Defoliation

Growth Analysis of Five Spring and Five Winter Triticale Genotypes

Contact Info

Product

Resources

About