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نویسندگان مقالات پربازدید :
مجله زیست شناسی اروپای مرکزی 2014
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همایش ، رویداد ، ژورنال
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  • effect of temperature and light on seed germination of erysimum naxense and erysimum krendlii

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
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     seed germination of two local greek endemics was studied (erysimum naxense, erysimum krendlii). seed viability was determined by using the tetrazolium method and germination was studied in synchronized cycles of five and four alternating temperatures [10/5 (for e. naxense only) and 15/10, 20/15, 25/20, and 30/25°c for both species, in cycles of 16 h day/8 h night], and in five light regimes (red, blue, green, white, and dark). germination of e. naxense and e. krendlii seeds was determined daily for six and five weeks, respectively, with the data analyzed as viability adjusted accumulative seed germination at the end of each week. e. naxense’s seed viability was higher (90%) than that of e. krendlii (64%); seed germination (%) of both increased at low alternating temperatures (10/5°c, 15/10°c, 20/15°c). germination of e. naxense seeds at low temperatures was light-independent, whereas at high temperatures it was increased with red light. germination ofe. krendlii seeds was inconsistently affected by light at the temperatures studied. percentages of seed germination of both species were higher in experimental conditions similar to the ones of their natural habitats during autumn and/or spring (facilitated with geographic information systems). these conclusions provide guidelines for species-specific propagation protocols and ex situconservation.

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