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Updated: Aug 17, 2026

Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions
Published on: November 6, 2016
[Effect of space environment on germination and vegetation growth in Carthamus tinctorius L]
Objective:
To substantiate the effects of space condition on medicinal plants.
Method:
The seeds of medicinal plant Carthamus tinctorius were carried on board a retrievable satellite during 3-18 July, 1994. After returing to earth, the seedling rate, state of growth and development were observed.
Result:
The seeding rates, plant heights and branch quantities of weightless seeds and the seeds which were penetrated once and less than once by the heavy ion rays were higher than those of the seeds which were kept on earth, but these indexes of the seeds which were penetrated 2-3 times by the heavy ion rays were higher than those of the ground controlled seeds.
Conclusion:
Weightlessness and little penetration promote the growth and development of Carthamus tinctorius, but much penetration functions the other way round.
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Transcription
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Regulation of Transpiration by Stomata
Adaptations that Reduce Water Loss
Seed Structure and Early Development of the Sporophyte
Responses to Heat and Cold Stress
Responses to Salt Stress