تعیین سطح پلوئیدی گیاهچه‌های حاصل از کشت بساک گیاه سیکلامن (Cyclamen persicum L.)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران

2 دانشیار، گروه تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بوعلی سینا، همدان، ایران

10.22034/plant.2025.142160.1128

چکیده

سیکلامن گیاهی چندساله با گلدهی زمستانه است. در این پژوهش 14 گیاهچه‌ حاصل از کشت بساک سیکلامن با روش‌های شمارش کلروپلاست‌های سلول‌های محافظ روزنه، تراکم و اندازه سلول‌های محافظ روزنه، فلوسایتومتری و نشانگرهای مولکولی بررسی گردید. در بین تعداد کلروپلاست‌ها و تراکم و اندازه طول و عرض سلول‌های محافظ روزنه بین گیاهچه‌های کاندید هاپلوئیدی و گیاهچه‌های مادری تفاوت زیادی وجود نداشت. نتایج فلوسایتومتری مشخص نمود که سطح پلوئیدی گیاهچه مادری و تمام گیاهچه‌های حاصل از کشت بساک با یکدیگر برابر هستند. در این تحقیق، منشا وتنوع ژنتیکی گیاهچه-های حاصل از کشت بساک سیکلامن با استفاده از ۵ آغازگر ISSR ارزیابی شدند. پس از تحلیل داده‌های مولکولی مشخص شد که هیچکدام از نمونه‌ها کاملاً از لحاظ ژنتیکی مشابه والد مادری نبوده و حداقل در چند مکان نشانگر بین آن‌ها با نمونه مادری تفاوت وجود داشت. در نتیجه هیچ‌یک از گیاهچه‌ها، حاصل از دیواره بساک نبوده و همگی از دانه گرده منشاء گرفته‌اند. اما با توجه به اینکه نتایج شمارش کلروپلاست، تراکم و اندازه سلول‌های محافظ روزنه و نتایج فلوسایتومتری، دیپلوئید بودن گیاهان حاصل از کشت بساک را تایید کردند به نظر می‌رسد که گیاهچه‌های حاصل از کشت بساک سیکلامن دیپلوئید خودبه‌خودی هستند.

کلیدواژه‌ها


عنوان مقاله [English]

Determination of ploidy level of plantlets obtained from Cyclamen persicum anther culture

نویسندگان [English]

  • Mahsa Hassani Farzad 1
  • Asghar Mirzaie-Asl 2
  • Mohammad Reza Abdollahi 2
1 MSc. graduateو Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
2 Associate Professor, Department of Plant Production and Genetics, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
چکیده [English]

The cyclamen plant (Cyclamen persicum L.) is a perennial plant with winter flowering. In this study, 14 plantlets obtained from cyclamen anther culture were investigated using various methods, including determination of the number of the chloroplasts in the stomatal guard cells, stomatal guard cell density and size, flow cytometry, and molecular markers No significant differences were observed in the number of chloroplasts, stomatal guard cell density, or the length and width of stomatal guard cells between the haploid candidate plantlets and the mother plantlets. The results of flow cytometry indicated that the ploidy level of the mother plant and all plants obtained from anther culture was the same. Additinonally, this study evaluated the origin and genetic diversity of plantlets obtained from cyclamen anther culture using 5 ISSR primers. Analysis of the molecular data revealed that none of the samples obtained from cyclamen anther culture were genetically identical to the maternal plant. Differences were observed between the samples and the maternal plant at least in some marker loci. As a result, it was concluded that none of the plantlets were derived from the anther wall and all of them originated from pollen grains. However, the results of chloroplast counting in the stomatal guard cells, stomatal guard cell density and size on the lower leaf surface, and flow cytometry confirmed the diploid nature of the plants obtained from anther culture., This suggests that all the plantlets obtained from the anther culture of cyclamen are spontaneous diploids.

کلیدواژه‌ها [English]

  • Chloroplast number
  • Flow cytometry
  • Genetic diversity
  • ISSR markers
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