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conference schedule and program with abstracts - Horticulture ...

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P-78<br />

Y. Sharafi* <strong>and</strong> M. Karimi<br />

Genetic diversity in Maragheh grapevines pollen traits<br />

Islamic Azad University-Maragheh Branch, Maragheh, Iran<br />

*Corresponding author: yavarsharafi@yahoo.com<br />

The grapevine (Vitis vinifera, L) is cultured widely in Maragheh making it one of the most<br />

important commercial fruit crops. Most of the cultivars are used as rasin, juice <strong>and</strong> fresh fruits<br />

crops. However, pollination is the main factor affecting fruit set, furthermore, knowledge about<br />

pollen traits of cultivars is necessary to plan the breeding <strong>program</strong>s. This study accomplished to<br />

investigate pollen traits of the main grape cultivars/ genotypes planted in Maragheh, for<br />

identifying genetic diversity of their pollens to use in the future different breeding <strong>program</strong>s.<br />

Pollens of 10 cultivars/genotypes gathered <strong>and</strong> cultured in the in-vitro medium contained<br />

Sucrose, Boric acid <strong>and</strong> Agar. Experimental design was completely r<strong>and</strong>omized <strong>with</strong> 10<br />

treatments <strong>and</strong> 4 repeats <strong>and</strong> data analyzed <strong>with</strong> SAS software. Main pollen traits are important<br />

in breeding <strong>program</strong>s, were studied by light microscope weekly in 10 weeks including pollen<br />

viability, longevity, germination percentage <strong>and</strong> tube growth. Results showed significant<br />

differences among all of the studied cultivars/genotypes <strong>and</strong> cultivars clustered based on studied<br />

pollen traits for using in the different breeding <strong>program</strong>s.<br />

159


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