introduce the suitable medium for asymbiotic germination of epipactis veratrifolia

Authors

شیرین دیانتی

مربی، گروه باغبانی پردیس ابوریحان، دانشگاه تهران، پاکدشت ـ ایران محسن کافی

استاد، گروه مهندسی و علوم باغبانی و فضای سبز، پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، کرج ـ ایران مسعود میرمعصومی

مربی، گروه زیست شناسی، پردیس علوم، دانشگاه تهران، تهران ـ ایران ولی الله مظفریان

دانشیار، باغ گیاه شناسی ملی، مؤسسة تحقیقات جنگل ها و مراتع کشور، کرج ـ ایران علی رضا سلامی

abstract

five different media with two concentrations and kinds of carbohydrates and peptone treatments were examined for their effectiveness in promoting asymbiotic seed germination of epipactis veratrifolia. results revealed significant differences between media on seed germination percentage and protocorm growth and fast medium has the best effect on both. carbohydrate treatments had significant effect on seed germination percentage but not on protocorm growth. modified fast medium with 5gr l-1 fructose and 12 gr l-1 sucrose and 2 gr l-1 peptone (mfh2p2) was the best medium for seed germination (49.6%) and modified fast medium with 30 gr l-1 sucrose and 2 gr l-1 peptone (mfh1p2) was the best medium for protocorm growth (17.3 mm). media, carbohydrate and peptone influence seed germination percentage, while media and peptone alone influence protocorm growth. in addition, use of in vitro culture significantly reduced relatively long period of time which is necessary for seed germination and protocorm plantlets growth in natural conditions (approximately 2 years).

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Journal title:

به زراعی کشاورزی

جلد ۱۵، شماره ۲، صفحات ۱۶۱-۱۷۷

Keywords

five different media with two concentrations and kinds of carbohydrates and peptone treatments were examined for their effectiveness in promoting asymbiotic seed germination of epipactis veratrifolia. results revealed significant differences between media on seed germination percentage and protocorm growth and fast medium has the best effect on both. carbohydrate treatments had significant effect on seed germination percentage but not on protocorm growth. modified fast medium with 5gr l 1 fructose and 12 gr l 1 sucrose and 2 gr l 1 peptone (mfh2p2) was the best medium for seed germination (49.6%) and modified fast medium with 30 gr l 1 sucrose and 2 gr l 1 peptone (mfh1p2) was the best medium for protocorm growth (17.3 mm). media carbohydrate and peptone influence seed germination percentage while media and peptone alone influence protocorm growth. in addition use of in vitro culture significantly reduced relatively long period of time which is necessary for seed germination and protocorm plantlets growth in natural conditions (approximately 2 years).

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