Abstract
Four maize cultivars,Xundan 20,Xianyu 335,Denghai 662 and Zhengdan 958 used as testing materials,a nutrient solution culture experiment was conducted to investigate responses of growth and nutrient uptake and utilization among four maize cultivars to nitrogen,phosphorus and potassium deficiency at seedling stage.The results showed that root dry weight,root volume,root number,shoot dry weight,leaf area per plant,plant height and stem diameter all decreased under N-,P-,K-deficient condition.However,compared with plants under N,P,K control,the response degree of four cultivars to the same nutrient element deficiency was different.Under N-deficient condition,the increase of root length and N use efficiency,and the decrease of root dry weight,root volume,N,P,K content of root,transport ratio of N,P and K of Zhengdan 958 were significantly less than those of other three cultivars.Under P-deficient condition,the relative root dry weight,relative root volume and relative K content of root of Xianyu 335,Denghai 662 and Zhengdan 958 were significantly smaller than those of Xundan 20,and the decrease of dry weight of Xundan 20 was least,Xianyu 335 and Zhengdan 958 coming next,Denghai 662 the third.Under K-deficient condition,the relative shoot dry weight and relative N,P,K content of shoot of Xianyu 335 reached the highest.Under the same deficiency level,the effect of nutrients deficiency on maize growth at seedling stage was N deficiency P deficiency K deficiency,and response differences of four maize cultivars to N,P,K were presented as,capacity of tolerance to low N-: Zhengdan 958Xianyu 335Xundan 20Denghai 662,capacity of tolerance to low P-: Xundan 20Xianyu 335Zhengdan 958 Denghai 662;capacity of tolerance to low K-: Xianyu 335Zhengdan 958Denghai 662Xundan 20.
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Claims 11
Claim · model-written summary
N, P and K deficiency reduced multiple maize seedling growth traits.
- Treatment
- N-,P-,K-deficient conditione0
- Outcome
- root dry weight,root volume,root numbere0
- Direction
- decreasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root dry weight,root volume,root number,shoot dry weight,leaf area per plant,plant height and stem diameter all decreased under N-,P-,K-deficient condition.”
t0“maize”
Claim · model-written summary
The four cultivars differed in response to the same nutrient deficiency.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the response degree of four cultivars to the same nutrient element deficiency was different.”
t0“maize”
Claim · model-written summary
Under N deficiency, Zhengdan 958 had smaller increases in root length and N use efficiency than the other cultivars.
- Material
- Zhengdan 958e0
- Treatment
- N-deficient conditione0
- Outcome
- root length and N use efficiencye0
- Direction
- significantly lesse0
- Comparator
- other three cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under N-deficient condition,the increase of root length and N use efficiency,and the decrease of root dry weight,root volume,N,P,K content of root,transport ratio of N,P and K of Zhengdan 958 were significantly less than those of other three cultivars.”
t0“maize”
Claim · model-written summary
Under N deficiency, Zhengdan 958 had smaller declines in root mass, volume, nutrient content and nutrient transport than the other cultivars.
- Material
- Zhengdan 958e0
- Outcome
- root dry weight,root volume,N,P,K content of roote0
- Direction
- significantly lesse0
- Comparator
- other three cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease of root dry weight,root volume,N,P,K content of root,transport ratio of N,P and K of Zhengdan 958 were significantly less than those of other three cultivars.”
t0“maize”
Claim · model-written summary
Under P deficiency, three cultivars had lower relative root mass, root volume and root K content than Xundan 20.
- Outcome
- relative root dry weight,relative root volume and relative K content of roote0
- Direction
- significantly smallere0
- Comparator
- Xundan 20e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative root dry weight,relative root volume and relative K content of root of Xianyu 335,Denghai 662 and Zhengdan 958 were significantly smaller than those of Xundan 20”
t0“maize”
Claim · model-written summary
Under P deficiency, Xundan 20 lost the least dry weight, followed by Xianyu 335 and Zhengdan 958, then Denghai 662.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decrease of dry weight of Xundan 20 was least,Xianyu 335 and Zhengdan 958 coming next,Denghai 662 the third.”
t0“maize”
Claim · model-written summary
Under K deficiency, Xianyu 335 had the highest relative shoot dry weight and shoot N, P and K content.
- Material
- Xianyu 335e0
- Outcome
- relative shoot dry weight and relative N,P,K content of shoote0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under K-deficient condition,the relative shoot dry weight and relative N,P,K content of shoot of Xianyu 335 reached the highest.”
t0“maize”
Claim · model-written summary
N deficiency affected seedling growth most, followed by P and K deficiency.
- Outcome
- effect of nutrients deficiency on maize growth at seedling stagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of nutrients deficiency on maize growth at seedling stage was N deficiency P deficiency K deficiency”
t0“maize”
Claim · model-written summary
Zhengdan 958 was ranked most tolerant to low N.
- Outcome
- capacity of tolerance to low N-e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“capacity of tolerance to low N-: Zhengdan 958Xianyu 335Xundan 20Denghai 662”
t0“maize”
Claim · model-written summary
Xundan 20 was ranked most tolerant to low P.
- Outcome
- capacity of tolerance to low P-e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“capacity of tolerance to low P-: Xundan 20Xianyu 335Zhengdan 958 Denghai 662”
t0“maize”
Claim · model-written summary
Xianyu 335 was ranked most tolerant to low K.
- Outcome
- capacity of tolerance to low K-e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“capacity of tolerance to low K-: Xianyu 335Zhengdan 958Denghai 662Xundan 20”
t0“maize”