| Accumulation and distribution characteristics of dry matter of two potato cultivars in Zhangbei Area |
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| DOI：10.7606/j.issn.1000-7601.2013.05.016 |
| Key Words: potato dry matter accumulation and distribution yie
ld |
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| Abstract: |
| Two potato cultivars, including Jizhangshu No.8 an
d Shepody, were tested to compare the accumulation and distribution of dry matte
r at different growth stages of potato. The results showed that the dry matter a
ccumulation of whole plant was in line with “S” curve. The central organs for
the accumulation and distribution of dry matter at different stages were success
ively leaves, roots, stems and tubers. The peak value of dry matter accumulation
in leaves and stems of Jizhangshu No.8 appeared later than that of Shepody, whi
le the peak value of dry matter accumulation in roots and tubers appeared at the
same stage for the two cultivars. In the whole growth period, the accumulation
amounts of dry matter in leaves, stems, roots and tubers of Jizhangshu No.8 were
totally larger than those of Shepody. As a result, the yield of Jizhangshu No.8
was 23.9% higher than that of Shepody. |
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