scholarly journals Dry Matter Production and Distribution of Mineral Ions in Different Parts of the Plant in Hexaploid Triticale under Salt Stress Conditions.

1992 ◽  
Vol 61 (3) ◽  
pp. 439-446 ◽  
Author(s):  
Md. Abdul KARIM ◽  
Eiji NAWATA ◽  
Shoji SHIGENAGA
Keyword(s):  
Salt Stress ◽  
Dry Matter ◽  
Stress Conditions ◽  
Dry Matter Production ◽  
Hexaploid Triticale ◽  
Matter Production ◽  
Production And Distribution ◽  
Mineral Ions ◽  
Different Parts

scholarly journals Genotypic evaluation of cowpea germplasm for salinity tolerance at germination and during seedling growth

2021 ◽  
Vol 54 (1) ◽  
pp. 71-88
Author(s):  
Eric Bertrand Kouam ◽  
Toscani Ngompe-Deffo ◽  
Honoré Beyegue-Djonko ◽  
Marie Solange Mandou ◽  
Asafor Henry Chotangui ◽  
...  
Keyword(s):  
Growth Rate ◽  
Salt Stress ◽  
Water Content ◽  
Seedling Growth ◽  
Dry Matter ◽  
Growth Characteristics ◽  
Dry Matter Production ◽  
Matter Production ◽  
Improvement Programs ◽  
Germination Traits

Abstract Soil salinity represents a major constraint limiting crop production in arid and semi-arid countries. The effect of salinity induced by sodium chloride (NaCl) at five levels (0, 50, 100, 150 and 200 mM) was investigated on four germination traits and thirteen seedling growth characteristics in twenty cowpea [Vigna unguiculata (L.) Walp.] genotypes (ET11, KEB-CP004, KEB-CP006, KEB-CP009, KEB-CP 010, KEB-CP020, KEB-CP033, KEB-CP038, KEB-CP039, KEB-CP045, KEB-CP051, KEB-CP054, KEB-CP057, KEB-CP060, KEB-CP067, KEB-CP068, KEB-CP118, MTA22, NO74 and NO1036). The germination tests were carried out on Petri dishes in the laboratory while seedling growth experiments continued in plastic pots in the greenhouse, both setting up using a randomised complete block design with three replications. Genotypic responses were significant for all germination traits (p < 0.001). Germination percentage, germination rate index, and coefficient of velocity of germination were all decreased by salt stress. However, the mean germination time increased with increasing saline conditions. Significant differences were found between genotypes for most growth attributes. Growth rate (centimeter increased in height per week) decreased significantly with increasing salinity, starting at 100 mM NaCl (24.20% reduction, 2.66 cm / week) with maximum reduction (38.58%) corresponding to 2.16 cm/week observed at 200 mM NaCl, compared to control (3.51 cm/week growth rate). Also, significant decline in shoot weights, number of functional leaves and dry matter production were observed under salinity. Salinity also reduced water content in shoot and root and did not affect root weights. Under salinity, significant correlations were found between all germination variables (p < 0.001). Growth rate was significantly associated with ten out of the twelve other seedling growth traits. Also, the dry matter production under salinity was significantly associated with all other seedling growth characteristics with the exception of root water content. Given the effect of salt stress, cowpea genotypes, namely NO1036, KEB-CP004, KEB-CP038 and KEB-CP051, were the most tolerant while KEB-CP068 and ET11 were the most sensitive ones. The results confirm substantial genetic variation in salt stress tolerance among the studied genotypes. The most tolerant genotypes should be further explored in genetic improvement programs and should be promoted for culture in regions affected by salinity.

Dry matter production and distribution of zinc in bread and durum wheat genotypes differing in zinc efficiency

1996 ◽  
Vol 180 (2) ◽  
pp. 173-181 ◽  
Author(s):  
I. Cakmak ◽  
N. Sari ◽  
H. Marschner ◽  
M. Kalayci ◽  
A. Yilmaz ◽  
...  
Keyword(s):  
Durum Wheat ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Zinc Efficiency ◽  
Wheat Genotypes ◽  
Matter Production ◽  
Production And Distribution

Growth response of western hemlock and Douglas-fir seedlings to temperature regimes during day and night

1971 ◽  
Vol 49 (2) ◽  
pp. 289-294 ◽  
Author(s):  
H. Brix
Keyword(s):  
Dry Matter ◽  
Douglas Fir ◽  
Western Hemlock ◽  
Stem Length ◽  
Dry Matter Production ◽  
Night Temperature ◽  
Temperature Regimes ◽  
Matter Production ◽  
Production And Distribution ◽  
Growing Conditions

Growth of western hemlock and Douglas-fir seedlings was studied under 11 controlled day–night temperature regimes ranging from 8 to 28 °C, and with light intensities of 450 and 1000 ft-c for 100 days after seed germination. Production and distribution of dry matter, together with length and diameter of stem, were measured. Douglas fir had a broad optimum temperature for growth between 18 and 24 °C, whereas hemlock had a pronounced optimum at 18 °C, especially at high light. High temperature was more detrimental to growth of hemlock than of Douglas fir. At 28 °C, dry matter production of hemlock was 7, and of Douglas fir 40% of the maximum. Low temperature similarly affected the two plants. A constant day–night temperature regime was as good or better than alternating temperatures for both plants. Day temperature was more effective in increasing growth than night temperature. Light intensity, for most temperature regimes, had a pronounced effect on dry matter production, less on stem diameter, and little or none on stem length. Dry matter production of hemlock was considerably lower than for Douglas fir for all growing conditions.

Effect of salt stress on dry matter production and nitrogen uptake by tomatoes1

1990 ◽  
Vol 13 (5) ◽  
pp. 567-577 ◽  
Author(s):  
S.A. Al‐Rawahy ◽  
J.L. Stroehlein ◽  
M. Pessarakli
Keyword(s):  
Salt Stress ◽  
Nitrogen Uptake ◽  
Dry Matter ◽  
Dry Matter Production ◽  
Matter Production
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