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本试验以高淀粉品种晋薯2号、中淀粉品种内薯3号和低淀粉品种紫花白为试验材料,设置了小区试验.在生育期间,从植株茎叶淀粉含量、单株叶面积、单株干物重、单株茎数和块茎数等方面与块茎淀粉含量的相关关系进行了研究,其结果:(1)叶片和茎秆中的淀粉含量与块茎淀粉含量呈正相关.因此,生育前中期叶片和生育中后期茎秆的淀粉含量,可做为马铃薯高淀粉育种早期选择的生理指标和品质预测的依据;(2)单株叶面积和单株干物重始终与块茎淀粉含量呈正相关.因此,单株最大叶面积和任何生育时期的单株干物重,均可做为马铃薯高淀粉育种早期选择和品质预测的生理指标;(3)单株茎数、单株块茎数与块茎淀粉含量呈正相关或显著正相关.故单株茎数、单株块茎数可做为马铃薯高淀粉育种早期选择的重要生理指标和品质预测的依据.
In this experiment, the high-starch variety Jinshu 2, the middle starch variety Neishu 3 and the low starch variety purpurea as the experimental materials, set up a plot test during the growth period, from the plant stems and leaves starch content, leaf area per plant, single The results showed that: (1) The starch content in leaves and stems was positively correlated with the starch content in tubers, therefore, the content of starch in tuberous stems The starch content in the leaves and the stems in the middle and late growth stages could be used as the basis for physiological index and quality prediction of the early selection of potato high starch breeding. (2) Leaf area per plant and dry weight per plant were always positively correlated with tuber starch content , The maximum leaf area per plant and the dry matter weight per plant at any growth stage could be used as physiological indices for early selection and quality prediction of potato high starch breeding. (3) The number of stems per plant, tuber number per plant and tuber starch content were positive Correlation or significant positive correlation, so the number of single plant stems per plant tuber number can be used as an early potato starch selection important physiological indicators and quality prediction basis.