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| Effects of low phosphorus and potassium stresson growth and yield of sweet，waxy corn |
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| DOI：10.16768/j.issn.1004-874X.2016.06.008 |
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| Abstract: |
| The effects of low phosphorus and potassium stress on growth and yield of different sweet，waxy corn
wre studied，phosphorus，potassium tolerance corn varieties wre selected，to provide a scientific basis for nutrition
and efficient breeding. The results showed that，plant height，above-ground dry weight，yield and related indicators of
five corn varieties were lower in treatments of N1P1K0，N1P0K1 compared with N1P1K1. While compared with N1P1K1，
the differences of plant height，stem diameter，dry weight and yield of all corn varieties in N1P0K0 reached a significant
level，and large differences were existed among varieties. Sweet，waxy corn can adapted to low nutrient levels through
physiological responses and altering root architecture. In this study， sweet，waxy corn accommodated the low nutrient
levels by changing the plant height and dry weight. Fuzzy comprehensive evaluation of yield and its components of five
varieties showed that Jingkenuo 209，Meiyuxiangtian No.16，Huameitian No.8 had higher low-potassium tolerance than
Huami and Yanhejing 2005. Meiyuxiangtian No.16，Huami，Yanhejing 2005 had higher low-phosphate tolerance than
Jingkenuo 209 and Huameitian No.8. |
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