Analysis of a High-yielding Strawberry (<i>Fragaria</i> ×<i>ananassa</i> Duch.) Cultivar ‘Benihoppe’ with Focus on Dry Matter Production and Leaf Photosynthetic Rate

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  • Mochizuki Yuya
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Iwasaki Yoshimi
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Funayama Mizuho
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Ninomiya Shinya
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Fuke Mitsutoshi
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Nwe Yin Yin
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • Yamada Masaaki
    Graduate School of Agriculture, Tokyo University of Agriculture and Technology
  • Ogiwara Isao
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology Graduate School of Agriculture, Tokyo University of Agriculture and Technology

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Other Title
  • 乾物生産量および葉の光合成速度に着目した多収性イチゴ‘紅ほっぺ’の解析

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This study was conducted to clarify the ecophysiological traits of high-yielding ‘Benihoppe’ with focus on its dry matter production, plant growth analysis, and leaf photosynthetic rate in comparison with those of ‘Toyonoka’ and ‘Sachinoka’. Total dry matter of ‘Benihoppe’ was higher than that of ‘Toyonoka’, while no difference was found between their harvest indices. In ‘Benihoppe’, the crop growth rate (CGR) and leaf area index (LAI) were higher than those of ‘Toyonoka’ and ‘Sachinoka’. The large LAI of ‘Benihoppe’ was attributed to its ability to bear larger leaves than other cultivars, while ‘Benihoppe’ demonstrated a superior net assimilation rate (NAR) to that of ‘Toyonoka’. NAR is affected by leaf photosynthetic activity; however, no difference was observed between the leaf photosynthetic rates of ‘Benihoppe’ and ‘Toyonoka’. Petioles in ‘Benihoppe’ that supported large leaves were longer and upright, and NAR might be affected by their trait, which allow solar radiation to penetrate the plant canopy. Thus, the outstanding CGR in ‘Benihoppe’ may be a result of the large LAI and upright petioles which allow solar radiation to penetrate the plant canopy.<br>

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