Tag Archives: genetic variation

xxx R. Ataei, M. Gholamhoseini, M.A. Nejatian and M. Golmohammadi
Study of clonal variation of ‘Bidaneh Ghermez’ grapevine cultivar in Iran
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Study of clonal variation of ‘Bidaneh Ghermez’ grapevine cultivar in Iran

R. Ataei¹, M. Gholamhoseini¹*, M.A. Nejatian² and M. Golmohammadi²

¹Seed and Plant Improvement Institute, Agricultural Research, Education and Extension Organization (AREEO), Blv Shahid Fahmideh, Mohammad Shahr, Karaj, Iran.
²Qazvin Agriculture and Natural Resources Research Center, Agricultural Research, Education and Extension Organization (AREEO), No 188, Blv Shahid Docter Beheshti, Qazvin, Iran
*Correspondence: mgholamhoseini@spii.ir

Abstract:

Grapevine (Vitis vinifera L.) is a well-known plant including different cultivars and clones. In spite of the extensive works at the cultivar level, identification and determination of clonal genetic variation has remained as a challenge. To assess the genetic variation between clones of grapevine cv. ‘Bidaneh Ghermez’, 20 selected clones were analyzed for cluster weight (CW), cluster length (CL), cluster width (CWI), berry weight (BW), berry length (BL), berry width (BWI) and total soluble solids (TSS) in randomized complete block design with three replications. Analysis of variance revealed considerable genetic variation for all measured traits (except cluster width) among clones. Cluster analysis, discriminant function analysis and principal component analysis (PCA) showed same results and all clones assigned in 2 groups. First group was including 9 clones and second group was including 11 clones. Overall, our results indicated C7, C10, C12 and C14 clones were best clones and have potential to introduce promising clones for stablishing new vineyard with high yield.

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93–97 I. Tamm
Genetic and environmental variation of grain yield of oat varieties
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Genetic and environmental variation of grain yield of oat varieties

I. Tamm

Jõgeva Plant Breeding Institute, 48309 Jõgeva, Estonia; e-mail: Ilmar.Tamm @jpbi.ee

Abstract:

Both variety genotype and climatic conditions influence the grain yield of oat. The field experiments were carried out in 1998_2002 at the Jõgeva Plant Breeding Institute (PBI) in Estonia to investigate the genetic and environmental variation of oat grain yield. 101 oat varieties from Germany, Sweden, Russia, Canada, USA, and other countries were included in the trial.
    As a result of the trial, the climatic conditions proved to have considerable influence on the grain yield of oat. Oat grain yield was decreased by drought and high temperatures in 1999 and 2002. Heavy winds and rains caused  lodging of oat crop and lowered the grain yield in 1998 and 2001. The oat grain yield was highest in 2000, in rainy vegetaton period with moderate temperature. The coefficients of variation and differences between minimum and maximum values indicate the wide range of genetic variability of grain yield.

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