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<p>Asiatic/desi cotton (<i>Gossypium arboreum</i>) commands a high demand due to its elevated price, surgical application and resistance to biotic stresses. The production of vigorous seeds in desi cotton is still a challenge due to intra-plant seed quality variation. In the present study, nine varieties were evaluated for two years (2021 and 2022) to examine the influence of picking time and boll position on seed physiological parameters. According to the boll position, the plants were divided into three stratum i.e. bottom stratum (up to 40&#xa0;cm of plant height), middle (41–80&#xa0;cm) and top (more than 80&#xa0;cm). The tagged bolls from each genotype and stratum were then harvested at 140 days after sowing (DAS), 150, 160 and 170 DAS and the seeds obtained after ginning were used for experimentation. It was observed that picking time, plant stratum and their interaction significantly influenced seed quality parameters. The middle stratum bolls consistently exhibited significantly higher seed quality compared to the top and bottom stratum. The highest germination (%) was observed in seeds from the middle stratum at 140 DAS (86.63) which was statistically equivalent to bottom stratum seeds at 150 DAS (82.96). The lowest germination (%) was observed at 170 DAS regardless of boll position. Significantly higher seed vigour index-I (SV-I) and SV-II was noted in the seeds harvested during 140 DAS (2027.77 and 1435.44, respectively) to 150 DAS (2158.11 and 1254.21, respectively). A gradual decrease of seed vigour parameters after 150 DAS suggested picking of matured bolls during 140 to 150 DAS for better seed quality in Asiatic cotton.</p>

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Influence of boll position and picking time on seed physiological traits in Asiatic cotton (Gossypium arboreum)

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月19日

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  • Debashis Paul,
  • V. Santhy,
  • Nidhi Babbar,
  • S. K. Verma,
  • Subhash Chandra,
  • Amarpreet Singh,
  • Rishi Kumar

摘要

Asiatic/desi cotton (Gossypium arboreum) commands a high demand due to its elevated price, surgical application and resistance to biotic stresses. The production of vigorous seeds in desi cotton is still a challenge due to intra-plant seed quality variation. In the present study, nine varieties were evaluated for two years (2021 and 2022) to examine the influence of picking time and boll position on seed physiological parameters. According to the boll position, the plants were divided into three stratum i.e. bottom stratum (up to 40 cm of plant height), middle (41–80 cm) and top (more than 80 cm). The tagged bolls from each genotype and stratum were then harvested at 140 days after sowing (DAS), 150, 160 and 170 DAS and the seeds obtained after ginning were used for experimentation. It was observed that picking time, plant stratum and their interaction significantly influenced seed quality parameters. The middle stratum bolls consistently exhibited significantly higher seed quality compared to the top and bottom stratum. The highest germination (%) was observed in seeds from the middle stratum at 140 DAS (86.63) which was statistically equivalent to bottom stratum seeds at 150 DAS (82.96). The lowest germination (%) was observed at 170 DAS regardless of boll position. Significantly higher seed vigour index-I (SV-I) and SV-II was noted in the seeds harvested during 140 DAS (2027.77 and 1435.44, respectively) to 150 DAS (2158.11 and 1254.21, respectively). A gradual decrease of seed vigour parameters after 150 DAS suggested picking of matured bolls during 140 to 150 DAS for better seed quality in Asiatic cotton.