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<p>Chilli is an essential economic crop plant in India and throughout the world. The genus <i>Capsicum</i> is one of the most economically important crops cultivated by most of the farmers. The knowledge of pollen biology is essential and requires information for crop breeding and hybridization programs. Pollen traits such as pollen morphology, pollen production, pollen viability, and germination can affect the success of fruit set number through fertilization. Therefore, the present study aimed to evaluate the palynological relationship between 10 local chilli cultivars from Tripura, Northeast India, with the help of light microscopy and scanning electron microscopy techniques. The pollen grains of the local chili cultivar were found to be medium to large, with tricolpate (3 colpi) aperture. Prolate spheroidal was the most dominant shape among the ten studied cultivars. The average polar axis ranged between 48 and 51&#xa0;μm; in contrast, the equatorial diameter ranged from 46 to 47&#xa0;μm. Furthermore, A dendrogram was generated using pollen morphological traits (polar axis, equatorial diameter, exine thickness, colpi length and breadth, pollen production, and Polar to equatorial (P/E) ratio) by UPGA method. Exine thickness cultivar002 is much thicker compare other cultivars in this group which distinct this cultivar from the rest. Pollen viability and germination data revealed that these traits increase or decrease in a time-dependent manner. However, some variations were observed among studied cultivars. This palynological information can significantly boost chilli cultivation and breeding strategies.</p>

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Evaluating the palynological features of economically significant Chilli crop through light and scanning electron microscopy

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月28日

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  • Sani Das,
  • Somnath Kar,
  • Aparajita Das,
  • Biplab Banik,
  • Marami Mili,
  • Antara Bose,
  • Panchatapa Bhattacharya,
  • Smita Debbarma,
  • Dixit Bora,
  • Badal Kumar Datta

摘要

Chilli is an essential economic crop plant in India and throughout the world. The genus Capsicum is one of the most economically important crops cultivated by most of the farmers. The knowledge of pollen biology is essential and requires information for crop breeding and hybridization programs. Pollen traits such as pollen morphology, pollen production, pollen viability, and germination can affect the success of fruit set number through fertilization. Therefore, the present study aimed to evaluate the palynological relationship between 10 local chilli cultivars from Tripura, Northeast India, with the help of light microscopy and scanning electron microscopy techniques. The pollen grains of the local chili cultivar were found to be medium to large, with tricolpate (3 colpi) aperture. Prolate spheroidal was the most dominant shape among the ten studied cultivars. The average polar axis ranged between 48 and 51 μm; in contrast, the equatorial diameter ranged from 46 to 47 μm. Furthermore, A dendrogram was generated using pollen morphological traits (polar axis, equatorial diameter, exine thickness, colpi length and breadth, pollen production, and Polar to equatorial (P/E) ratio) by UPGA method. Exine thickness cultivar002 is much thicker compare other cultivars in this group which distinct this cultivar from the rest. Pollen viability and germination data revealed that these traits increase or decrease in a time-dependent manner. However, some variations were observed among studied cultivars. This palynological information can significantly boost chilli cultivation and breeding strategies.