TITLE

Effects of inter-varietal diversity, biotic stresses and environmental productivity on grain yield of spring barley variety mixtures

AUTHOR(S)
Kiær, Lars; Skovgaard, Ib; Østergård, Hanne
PUB. DATE
May 2012
SOURCE
Euphytica;May2012, Vol. 185 Issue 1, p123
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Varietal seed mixtures tend to increase and stabilize crop yields, yet their application is sparse. Large-scale cultivation of variety mixtures may require a better understanding of how inter-varietal interactions and their interaction with the environment may influence the grain yield of variety mixtures relative to their component varieties. For this purpose, six variety mixtures of spring barley and 14 component varieties were grown in each of 17 trial environments. A total of 28 observed and a priori plant characteristics, including grain yield, disease severity and weed competitiveness, were derived for each component variety in each trial. The relationship between inter-varietal diversity of each characteristic and the mixing effect on grain yield was analysed. Additionally, various types of yield stability were estimated and compared among mixtures and component varieties. One mixture out-yielded all of its component varieties in almost half of the trial environments. Inter-varietal diversity in grain yield potential correlated significantly with mixing effect, as did straw length diversity when weighted with weed pressure. The grain yields of most mixtures were more stable across environments than their component varieties when accounting also for the general response to environmental productivity. Hence, most mixtures adapted slightly better to environmental productivity and were less sensitive to environmental stress than their component varieties. We conclude that the efficacy of variety mixtures may be enhanced by mixing relatively high-yielding varieties differing in responsiveness to environmental productivity.
ACCESSION #
73982373

 

Related Articles

  • Changes in the rate of photosynthesis accompanying the yield increase in wheat cultivars released in the past 50 years. Jiang, G. M.; Sun, J. Z.; Liu, H. Q.; Qu, C. M.; Wang, K. J.; Guo, R. J.; Bai, K. Z.; Gao, L. M.; Kuang, T. Y. // Journal of Plant Research;Oct2003, Vol. 116 Issue 5, p347 

    Photosynthetic rates in different development stages were carefully investigated in 18 cultivars of winter wheat released in the period between 1945 and 1995 in the area of Beijing, China. During this period, the recorded grain yield has increased eightfold. However, when those cultivars were...

  • Reduced doses of herbicides to control weeds in barley crops under temperate climate conditions. Barros, José C.; Basch, Gottlieb; Calado, José G.; Carvalho, Mario // Brazilian Journal of Agricultural Sciences / Revista Brasileira ;2011, Vol. 6 Issue 2, p197 

    Yield losses in cereal crops under temperate climate conditions due to weed-crop competition, namely Lolium rigidum G., can reach up to 80%, depending on the season and infestation level. Nevertheless, the costs of chemical weed control and the environmental impact caused by herbicides recommend...

  • Quantitative trait loci for yield and related traits in the wheat population Ning7840 × Clark. Marza, F.; Bai, G.; Carver, B.; W. Zhou // Theoretical & Applied Genetics;Feb2006, Vol. 112 Issue 4, p688 

    Grain yield and associated agronomic traits are important factors in wheat ( Triticum aestivum L.) improvement. Knowledge regarding the number, genomic location, and effect of quantitative trait loci (QTL) would facilitate marker-assisted selection and the development of cultivars with desirable...

  • Critério de seleção indireta para a produtividade de grãos em feijão. Ribeiro, Nerinéia Dalfollo; Filho, Alberto Cargnelutti; Poersch, Nerison Luís; Rosa, Daniele Piano // Ciência Rural;may2010, Vol. 40 Issue 5, p986 

    The objective of this research was to investigate the correlation between general adaptation note and grain yield as indirect selection strategy. Nine experiments were conducted in the agricultural years of 2000/2001 and 2004/2005, in two growing seasons, at Rio Grande do Sul State, Brazil...

  • Avaliação de cultivares de milho crioulo em sistema de baixo nível tecnológico. Carpentieri-Pípolo, Valéria; de Souza, Agnelo; da Silva, Daiana Alves; Barreto, Thales Pereira; Garbuglio, Deoclécio Domingos; Ferreira, Josué Maldonado // Acta Scientiarum: Agronomy;Apr-Jun2010, Vol. 32 Issue 2, p229 

    With the advent of modern agriculture, landrace seeds were replaced by hybrid cultivars, which feature high grain yield potential - though more dependent on intensive technologies. The objective of this work was to evaluate maize landraces, in order to identify more productive materials that can...

  • Pi statistics underlying the evaluation of stability, adaptability and relation between the genetic structure and homeostasis in popcorn. de Paula, Thiago Otávio Mendes; Júnior, Antonio Teixeira do Amaral; Gonçalves, Leandro Simões Azeredo; Scapim, Carlos Alberto; Peternelli, Luiz Alexandre; da Silva, Vanessa Quitete Ribeiro // Acta Scientiarum: Agronomy;Apr-Jun2010, Vol. 32 Issue 2, p269 

    The purpose of this study was to evaluate the interaction between genotypes and environments, evaluate adaptability and stability, and study the relationship between genetic structure and homeostasis. In addition to landrace, the study evaluated recommended genotypes or genotypes in experimental...

  • Influence of Irrigation Intervals, Some Cultivars and Plant Spacing on Growth, Yield and its Components in Rice Part (1) Vegetative Growth. Okasha, E. M.; El-Ganayni, A. A.; Abdou, M. A. A.; EL-Khoby, W. M. // Research Journal of Agriculture & Biological Sciences;Jul2009, Vol. 5 Issue 4, p506 

    A two-year experiment was carried out on rice (Oryza sativa L.), during 2006 (S1) and 2007 (S2), at the Rice Research and Training Center (RRTC) at Sakha, Kafr El-Sheikh Governorate, Egypt. The trail included three factors, viz. irrigation intervals (6 "I-6", 9 "I-9" and 12 "I-12" days), three...

  • SOWING DATE EFFECT ON YIELD OF DIFFERENT WHEAT VARIETIES. Ali, Muhammad Anjum; Ali, Mushtaq; Sattar, Muhammad; Ali, Liaqat // Journal of Agricultural Research (03681157);Jun2010, Vol. 48 Issue 2, p157 

    This study was conducted at Adaptive Research Farm, Vehari, Pakistan during the year 2003-06. Two newly evolved wheat varieties SH-2002 and AS-2002 alognwith a standard Uqab-2000 were subjected to different sowing times starting from November 1 to December 30 at ten days interval. The pooled...

  • YIELD AND CHEMICAL COMPOSITION OF THE GRAIN OF NEW DWARF BREEDING LINES OF OAT (Avena sativa L.). Tobiasz-Salach, Renata; Jankowska, Dorota; Bobrecka-Jamro, Dorota; Szpunar-Krok, Ewa // Acta Scientiarum Polonorum. Agricultura;2011, Vol. 10 Issue 4, p161 

    The work presents the results of a field experiment which was carried out in years 2007-2009 at the Didactic-Experimental Station of the University of Rzeszów in Krasne near Rzeszów. Economic value of six cultivated dwarf oat lines was assessed in comparison with the standard cultivar...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics