A Stability Analysis Using AΜΜΙ and GGE Biplot Approach on Forage Yield Assessment of Common Vetch in Both Conventional and Low-Input Cultivation Systems

Athanasios Korkovelos,Elisavet Bouloumpasi,Stylianos Zotis,Constantinos Ipsilandis,Vasileios Greveniotis

doi:10.3390/agriculture11060567

Athanasios Korkovelos, Elisavet Bouloumpasi + Show 3 more

Open Access

https://doi.org/10.3390/agriculture11060567

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Journal: Agriculture	Publication Date: Jun 20, 2021
Citations: 7	License type: CC BY 4.0

Affiliation: International Hellenic University

Abstract

Common vetch (Vicia sativa L.) is a widespread legume crop in the Mediterranean mega-environment, due to its versatile uses and its compatibility with organic and low-input farming systems. However, its adaptation to various such environments should be studied and varieties suitable for forage yield must be selected. This study aimed to explore forage yield stability of common vetch varieties based on the stability index, with a specific target to explore common vetch variety behavior in various environments. Six Greek varieties of common vetch were used over four environments for two years. The cultivation was conducted using a strip plot with the varieties randomized within each plot in both conventional and low-input cultivation systems. (Alexandros) and (Tempi) varieties showed stability for days to 50% of flowering (index >4000), while (Pigasos) and (Zefyros) for fresh forage yield (>200) across environments. Combined estimations, also showed stability of (Pigasos) and (Zefyros) for fresh forage yield. Comparisons between the conventional and low-input farming systems generally showed minor differences but revealed varieties that exhibit stable performance even in the low-input farming systems, where stability is generally a little higher. The AMMI and GGE biplot analysis depicted the stability performance of the varieties regarding the traits under experimentation. As far as the fresh forage and dry matter yield, (Zefyros) was the most stable and productive variety over all others. Correlations between traits displayed the positive relation of fresh forage yield with days for 50% flowering and dry forage yield. Positive correlations may be proved useful for indirect breeding through traits with high stability leading to the selection of traits that show low stability.

Highlights

Common vetch (Vicia sativa ssp. sativa L.) is one of the most important livestock legumes in the Mediterranean mega-environment due to its multiple uses, its high nutritional value, and its ability to grow in different environmental conditions [1]
GxE interaction (Table 1 (m.s.533.910** for fresh forage yield)) and Cultivation × environment interaction were very intense for all traits
Main preconditions of all comparisons were followed and a novel approach of stability index was introduced in all measurements

Summary

Introduction

Common vetch (Vicia sativa ssp. sativa L.) is one of the most important livestock legumes in the Mediterranean mega-environment due to its multiple uses, its high nutritional value, and its ability to grow in different environmental conditions [1]. Sativa L.) is one of the most important livestock legumes in the Mediterranean mega-environment due to its multiple uses, its high nutritional value, and its ability to grow in different environmental conditions [1]. Increased nutritional needs for livestock require the introduction of animal feed legumes in crop rotations [4]. Common vetch is considered among the best options to be part of crop rotations, especially in lower rainfall areas, and a good alternative to cereal monoculture, as it produces higher seed and protein yields, in comparison [5]. Another advantage of vetch cultivations is their compatibility with organic and low-input farming systems. It is a usual approach to cultivate local varieties or mixtures among them, to maintain yield under low-input farming systems that support mainly livestock [7]

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