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Related Concept Videos

Fruit Development, Structure, and Function01:58

Fruit Development, Structure, and Function

Fruits form from a mature flower ovary. As seeds develop from the ovules contained within, the ovary wall undergoes a series of complex changes to form fruit. In some fruits, such as soybeans, the ovary wall dries; in other fruits, such as grapes, it remains fleshy. In some cases, organs other than the ovary contribute to fruit formation; such fruits are called accessory fruits.
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Related Experiment Video

Updated: May 12, 2026

Preparation of Intact Tissue for Microscopic Analysis of the Endosperm Cell Layer in Developing and Mature Arabidopsis Seeds
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Structural and physiological characterization during wheat pericarp development.

F Xiong1, X R Yu, L Zhou

  • 1Key Laboratories of Crop Genetics and Physiology of the Jiangsu Province and Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China. feixiong@yzu.edu.cn

Plant Cell Reports
|April 26, 2013
PubMed
Summary
This summary is machine-generated.

This study details wheat pericarp development, revealing four distinct stages and varied characteristics across wheat parts and varieties. Pericarp plays crucial roles in protection, photosynthesis, and nutrient accumulation during seed development.

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Area of Science:

  • Plant Biology
  • Agricultural Science
  • Seed Development

Background:

  • Wheat pericarp development is crucial for seed quality but its precise sequence of events remains incompletely understood.
  • Detailed characterization of cytological and physiological features during wheat pericarp development is needed.

Purpose of the Study:

  • To investigate the structural development process of wheat (Triticum aestivum L.) pericarp in detail.
  • To characterize the physiological functions of wheat pericarp during seed development.

Main Methods:

  • Resin microtomy and microscopy for structural analysis.
  • Spectrophotometry and oxygen electrode for physiological measurements (chlorophyll, photosynthesis, respiration).
  • Scanning electron microscopy for mineral nutrient analysis.

Main Results:

  • Wheat pericarp development was divided into four stages: growth, formation, extinction, and maturation, each with distinct features.
  • Pericarp development varied by location and variety; dorsal pericarp showed fewer starch grains and slower apoptosis than abdominal mesocarp.
  • Chlorophyll content, photosynthesis, and respiration rates peaked around 16 days post-anthesis before declining; photosynthesis rate was lower than respiration rate.
  • Pericarp exhibited higher mineral element content (Ca, Zn, Fe, K) compared to the endosperm.

Conclusions:

  • Wheat pericarp development is a dynamic process with distinct cytological and physiological changes across four stages.
  • The pericarp performs multiple functions including protection, photosynthesis, mineral accumulation, and starch metabolism.
  • Understanding pericarp development provides insights into its roles throughout wheat seed development.