e-journal

Stabilization of yield in plant genotype mixtures through compensation rather than complementation

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† Background and Aims:
Plant genotypic mixtures have the potential to increase yield stability in variable, often unpredictable
environments, yet knowledge of the specific mechanisms underlying enhanced yield stability remains limited. Field studies are constrained by environmental conditions which cannot be fully controlled and thus reproduced. A suitable model system would allow reproducible experiments on processes operating within crop genetic mixtures.

† Methods:
Phenotypically dissimilar genotypes of Arabidopsis thaliana were grown in monocultures and mixtures under high levels of competition for abiotic resources. Seed production, flowering time and rosette size were
recorded.

† Key Results:
Mixtures achieved high yield stability across environments through compensatory interactions. Compensation was greatest when plants were under high levels of heat and nutrient stress. Competitive ability and mixture performancewere predictable from above-ground phenotypic traits even though below-ground competition
appeared to be more intense.

†Conclusions:
This study indicates that the mixing ability of plant genotypes can be predicted from their phenotypes
expressed in a range of relevant environments, and implies that a phenotypic screen of genotypes could improve the selection of suitable components of genotypic mixtures in agriculture intended to be resilient to environmental stress.

Key words: Arabidopsis thaliana, compensation, experimental ecology, genotype mixtures, model-to-crop
translational research, plant competition, resistance to environmental stress, variety mixtures, yield stability.

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Informasi Detail

Judul Seri

Annals of Botany

No. Panggil

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Penerbit

Oxford : Oxford University Press on behalf of the Annals of Botany Company., 2013

Deskripsi Fisik

Annals of Botany 112: 1439–1447, 2013

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

112: 2013

Subjek

PEMULIAAN TANAMAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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