Dynamic Analysis of the Pod and Grain Growth of Two Oil Herbaceous Peony Cultivars
Two oil herbaceous peony cultivars,'Hangbaishao'and'Fenyunu',were used as materials to study the dynamic changes in pod and grain growth.The results showed that the pod and grain development periods of'Hangbaishao'and'Fenyunu'were 90 d and 100 d,respectively.The morphological changes of the pods and grains of the two varieties were basically consistent during the growth and development process.Based on the morphological changes in the growth and development of peony grains,the growth and development process of herbaceous peony grains can be divided into four stages,namely the fertilization and grain formation period(S1),the rapid growth period of pods and grains(S2),and the enrichment and transformation period of grain contents(S3)and the dehydration and maturity stage of pods and grains(S4).This provides a technical reference for the high-yield,high-quality,and efficient cultivation technology of oil herbaceous peony for reasonable water and fertilizer regulation at different development stages.
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