Dry-matter accumulation and carbohydrate composition in developing normal- and high-lysine sorghum grain

1987 ◽  
Vol 35 (6) ◽  
pp. 981-985 ◽  
Author(s):  
Gebisa Ejeta ◽  
John D. Axtell
1976 ◽  
Vol 86 (1) ◽  
pp. 57-64 ◽  
Author(s):  
A. P. Rhodes ◽  
G. Jenkins

SUMMARYDry matter and Kjeldahl nitrogen estimations were made on the roots and shoots of the barley varieties Riso 1508, Hiproly and Maris Mink from the seedling stage to maturity under three nitrogen treatments. After heading, the shoots were further separated into ears and stems plus leaves. Total plant nitrogen uptake was greatest in the high lysine variety Riso 1508 and was associated with a greater production of dry matter. However, the proportion of total plant nitrogen and dry matter in the grain was highest in the variety Maris Mink and this effect increased with increasing nitrogen supply. The comparative efficiency of dry-matter production and nitrogen translocation of these varieties is discussed in relation to breeding barley of improved protein yield and quality.


2013 ◽  
Vol 39 (1) ◽  
pp. 126
Author(s):  
Qiao-Yi HUANG ◽  
Shuan-Hu TANG ◽  
Jian-Sheng CHEN ◽  
Fa-Bao ZHANG ◽  
Kai-Zhi XIE ◽  
...  

2018 ◽  
Vol 44 (3) ◽  
pp. 414 ◽  
Author(s):  
Tian-Jun XU ◽  
Tian-Fang LYU ◽  
Jiu-Ran ZHAO ◽  
Rong-Huan WANG ◽  
Chuan-Yong CHEN ◽  
...  

2014 ◽  
Vol 40 (1) ◽  
pp. 134 ◽  
Author(s):  
Yong-Lu TANG ◽  
Chao-Su LI ◽  
Chun WU ◽  
Xiao-Li WU ◽  
Gang HUANG ◽  
...  

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 523c-523
Author(s):  
Siegfried Zerche

Refined nutrient delivery systems are important for environmentally friendly production of cut flowers in both soil and hydroponic culture. They have to be closely orientated at the actual nutrient demand. To solve current problems, express analysis and nutrient uptake models have been developed in horticulture. However, the necessity of relatively laborious analysis or estimation of model input parameters have prevented their commercial use up to now. For this reason, we studied relationships between easily determinable parameters of plant biomass structure as shoot height, plant density and dry matter production as well as amount of nitrogen removal of hydroponically grown year-round cut chrysanthemums. In four experiments (planting dates 5.11.91; 25.3.92; 4.1.93; 1.7.93) with cultivar `Puma white' and a fixed plant density of 64 m2, shoots were harvested every 14 days from planting until flowering, with dry matter, internal N concentration and shoot height being measured. For each planting date, N uptake (y) was closely (r2 = 0.94; 0.93; 0.84; 0.93, respectively) related to shoot height (x) at the time of cutting and could be characterized by the equation y = a * × b. In the soilless cultivation system, dry matter concentrations of N remained constant over the whole growing period, indicating non-limiting nitrogen supply. In agreement with constant internal N concentrations, N uptake was linearly related (r2 = 0.94 to 0.99) to dry matter accumulation. It is concluded that shoot height is a useful parameter to include in a simple model of N uptake. However, in consideration of fluctuating greenhouse climate conditions needs more sophisticated approaches including processes such as water uptake and photosynthetically active radiation.


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