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Answer:
Seeds wait to germinate until three needs are met: water, correct temperature (warmth), and a good location (such as in soil). During its early stages of growth, the seedling relies upon the food supplies stored with it in the seed until it is large enough for its own leaves to begin making food through photosynthesis.
Answer:
Seed germination is a crucial process that influences crop yield and quality. Therefore, understanding the molecular aspects of seed dormancy and germination is of a great significance for the improvement of crop yield and quality. Significant progress has been made in elucidating the molecular mechanisms underlying the roles of plant hormones, mainly ABA and GA, in the regulation of seed dormancy and germination in dicot species; however, this phenomenon is scarcely studied in cereals. Therefore, further study is required to identify the molecular features involved in the regulation of the metabolic and signaling aspects of different plant hormones, and therefore seed dormancy and germination in cereals. In addition, the roles of other regulatory factors, such as epigenetic and posttranscriptional regulations of gene expression in controlling dormancy and germination of cereal seeds remain to be clarified.
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