Impacts of high temperature on embryonic growth and seed germination of dill (Anethum graveolens)

Temperature is the main exogenous factor that determines the growth, development and productivity of agricultural plants, including seed germination. In this work, we studied the thermosensitivity of heterogeneous dill seeds (Anethum graveolens). The study aimed to study the short-term (1-5 days) effect of high temperature (40 degrees C) on the growth of the embryo and germination of dill seeds formed on different umbels of the mother plant. The growth of the embryo had a significant effect on seed germination (r = 0.976; P < 0.001). Seeds collected from primary umbels have a more developed embryo and can overcome the effects of thermal stress. We also found that the duration of heat exposure at 40 degrees C, leading to a decrease in viability, can vary from 1-5 days for seeds from primary umbels, to 1-2 days for seeds from secondary umbels, which, in our opinion, is due to the heteromorphism. The influence of the place of seed formation on the mother plant and the high temperature during germination is critical for embryo growth and dill seeds' germination.

Authors
Bukharov A.F.1 , Baleev D.N.2 , Soldatenko A.V. 3 , Musaev F.B.3 , Kezimana P. 4 , Priyatkin N.S.5
Publisher
ISTA-INT SEED TESTING ASSOC
Number of issue
1
Language
English
Pages
7-17
Status
Published
Volume
49
Year
2021
Organizations
  • 1 All Russian Sci Res Inst Vegetable Growing, Branch Fed Sci Vegetable Ctr, Vereya 140153, Moscow Region, Russia
  • 2 All Russian Res Inst Med & Aromat Plants, 7 Grina St, Moscow 117216, Russia
  • 3 Fed Sci Vegetable Ctr, 14 Selektsionnaya St, Odintsovo Dist 143080, Moscow Region, Russia
  • 4 Peoples Friendship Univ Russia, RUDN Univ, 6 Miklukho Maklaya St, Moscow 117198, Russia
  • 5 Agrophys Res Inst, 14 Grazhdanskiy Pr, St Petersburg 195220, Russia
Keywords
Anethum graveolens L.; embryo growth; germination; seed heterogeneity; thermal sensitivity
Date of creation
20.07.2021
Date of change
20.07.2021
Short link
https://repository.rudn.ru/en/records/article/record/74572/
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