e-journal

Yield stability and relationships among stability parameters in faba bean (Vicia faba L.) genotypes

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Sixteen faba bean genotypes were evaluated in 13 environments in Ethiopia during the main cropping season for three years (2009–2011). The objectives of the study were to evaluate the yield stability of the genotypes and the relative importance of different stability parameters for improving selection in faba bean. The study was conducted using a randomized complete block design with four replications. G × E interaction and yield stability were estimated using 17 different stability parameters. Pooled analysis of variance for grain yield showed that the main effects of both genotypes and environments, and the interaction effect, were highly significant (P ≤ 0.001) and (P ≤ 0.01), respectively. The environment main effect accounted for 89.27% of the total yield variation, whereas
genotype and G × E interaction effects accounted for 2.12% and 3.31%, respectively. Genotypic superiority index (Pi) and FT3 were found to be very informative for selecting both high-yielding and stable faba bean genotypes. Twelve of the 17 stability parameters,including CVi, RS, α, λ, S2di, bi, Si (2), Wi, σi 2, EV, P59, and ASV, were influenced simultaneously by both yield and stability. They should accordingly be used as complementary criteria to select genotypes with high yield and stability. Although none of the varieties showed consistently superior performance across all environments, the genotype EK 01024-1-2 ranked in the top third of the test entries in 61.5% of the test environments and was identified as the most stable genotype, with type I stability. EK 01024-1-2 also showed a
17.0% seed size advantage over the standard varieties and was released as a new variety in 013 for wide production and named “Gora”. Different stability parameters explained genotypic performance differently, irrespective of yield performance. It was accordingly concluded that assessment of G × E interaction and yield stability should not be based on a single or a few stability parameters but rather on a combination of stability parameters.

Keywords:
Faba bean G × E interaction Rank correlation Stability parameters Yield stability

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Ketersediaan

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Informasi Detail

Judul Seri

T H E C R O P J O U R N A L

No. Panggil

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Penerbit

: Elsevier., 2015

Deskripsi Fisik

T H E C R O P J O U R N A L 3 ( 2 0 1 5 ) 2 5 8 – 2 6 8

Bahasa

English

ISBN/ISSN

-

Klasifikasi

NONE

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

-

Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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