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<p>The seed plot technique has been central to seed potato production in the subtropical plains of India, maintaining seed health by synchronizing planting with low aphid activity and by systematic roguing of virus-infected plants. However, dependence on conventional tubers as planting material limits multiplication rates and delays the availability of quality seed. Apical Rooted Cuttings (ARCs), a disease-free planting source, can complement the seed plot technique by accelerating multiplication while ensuring seed health. This study aimed to determine/investigate the optimal planting window for ARC integration into breeder seed production under subtropical conditions. Four planting dates (September 15, September 30, October 15, and October 30) were evaluated across six varieties (K. Himalini, K. Pukhraj, K. Khyati, K. Jyoti, K. Chandramukhi, and K. Badshah), with tissue culture plantlets as a control. Results revealed that late September planting (September 30) best synchronized ARC activity with the seed plot window, ensuring higher survival, multiplication rate, and production of healthy seed-size tubers (15–75&#xa0;g). Varietal differences were evident, with K. Himalini and K. Pukhraj showing consistently higher tuber numbers and yields. Importantly, only three to four rounds of cuttings per mother plant were feasible within the available window, as further cuttings risked falling outside the safe period for aphid management. These findings highlight the importance of aligning ARC planting with the seed plot technique window and restricting cuttings to ensure synchronization, maximize multiplication, and safeguard seed health in breeder seed production. Adoption of ARCs within this optimized timeframe can strengthen breeder seed production systems by reducing costs and improving availability of quality seed potatoes in subtropical regions.</p>

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Integration of Novel Apical Rooted Cutting Technology into Potato Breeder Seed Production

  • 期刊论文

  • 发表日期：

    2026年3月12日

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  • Tanuja Buckseth,
  • Jagesh K. Tiwari,
  • Rajesh K. Singh,
  • A. K. Singh,
  • C. Challam,
  • V. Kumar,
  • Ashwani K. Sharma,
  • Sumita Sharma,
  • M. Sadawarti,
  • Nandh Kumar N.,
  • B. Singh

摘要

The seed plot technique has been central to seed potato production in the subtropical plains of India, maintaining seed health by synchronizing planting with low aphid activity and by systematic roguing of virus-infected plants. However, dependence on conventional tubers as planting material limits multiplication rates and delays the availability of quality seed. Apical Rooted Cuttings (ARCs), a disease-free planting source, can complement the seed plot technique by accelerating multiplication while ensuring seed health. This study aimed to determine/investigate the optimal planting window for ARC integration into breeder seed production under subtropical conditions. Four planting dates (September 15, September 30, October 15, and October 30) were evaluated across six varieties (K. Himalini, K. Pukhraj, K. Khyati, K. Jyoti, K. Chandramukhi, and K. Badshah), with tissue culture plantlets as a control. Results revealed that late September planting (September 30) best synchronized ARC activity with the seed plot window, ensuring higher survival, multiplication rate, and production of healthy seed-size tubers (15–75 g). Varietal differences were evident, with K. Himalini and K. Pukhraj showing consistently higher tuber numbers and yields. Importantly, only three to four rounds of cuttings per mother plant were feasible within the available window, as further cuttings risked falling outside the safe period for aphid management. These findings highlight the importance of aligning ARC planting with the seed plot technique window and restricting cuttings to ensure synchronization, maximize multiplication, and safeguard seed health in breeder seed production. Adoption of ARCs within this optimized timeframe can strengthen breeder seed production systems by reducing costs and improving availability of quality seed potatoes in subtropical regions.