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1. Effect of K application on leaf carbonic anhydrase and nitrate reductase activities, photosynthetic characteristics, NPK and NO3 contents, growth, and yield of mustard

Creator:
Mohammad, F. and Naseem, U.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Brassica juncea, leaf area, oil content, pod, seed yield, and stomatal conductance
Language:
Multiple languages
Description:
In a sand culture experiment on mustard (Brassica juncea L. Czern. & Coss) cv. Varuna, all tested characteristics at 60 d stage and yield characteristics at harvest were enhanced by K application as its levels increased from 5 to 10, 15, 20, 25, and 30 mM K, with 20 mM K proving best. and F. Mohammad, U. Naseem.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Photosynthetic and growth responses of Camelina sativa (L.) Crantz to varying nitrogen and soil water status

Creator:
Pan, X., Lada, R., Caldwell, C. D., and Falk, K. C.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
botanika, botany, instantaneous water-use efficiency, net photosynthesis, nitrogen supply, seed yield, soil water status, and transpiration rate
Language:
Multiple languages
Description:
Water and nitrogen (N) deficiency are two major constraints limiting the yield and quality of many oilseed crops worldwide. This study was designed to assess the response of Camelina sativa (L.) Crantz to the availability of N and water resources on photosynthesis and yield parameters. All the measured variables, which included plant height, root and shoot dry matter, root:shoot ratio, xylem pressure potential (XPP), yield components, photosynthetic parameters, and instantaneous water-use efficiency (WUE) were remarkably influenced by water and nitrogen supply. Net photosynthetic rate (PN) and yield components were significantly decreased more by water deficit than by N deficiency. XPP, stomatal conductance (gs), and intercellular CO2 concentration (C i) decreased substantially as the water deficit increased irrespective of the level of N application. WUE at the high N supply [100 and 150 kg(N) ha-1] dropped in a large degree as the increased water deficit due to a larger decrease in PN than transpiration rate (E). The results of this study suggest that the regulative capacity of N supply on photosynthetic and plant growth response is significantly affected by soil water status and C. sativa is more sensitive to water deficit than N supply. and X. Pan ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Photosynthetic efficiency of plants of Brassica juncea, treated with chlorosubstituted auxins

Creator:
A., Ahmad, Hayat, S., Fariduddin, Q., and Ahmad, I.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
carbonic anhydrase, carboxylation efficiency, chloroindole auxins, chlorophyll, net photosynthetic ate, nitrate reductase, pod, and seed yield
Language:
Multiple languages
Description:
The leaves of 29-d-old plants of Brassica juncea Czern & Coss cv. Varuna were sprayed with 10-6 or 10-8 M aqueous solutions of indole-3-yl-acetic acid (IAA) or its substituted derivatives 4-Cl-IAA, 7-Cl-IAA, and 4,7-Cl2-IAA. All the auxins improved the vegetative growth and seed yield at harvest compared with those sprayed with de-ionised water (control). 4-Cl-IAA was most prominent in its effect, generating 21.6, 39.7, 61.0, 35.0, 65.5, and 56.2% higher values for dry mass, leaf chlorophyll content, carbonic anhydrase (E.C. 4.2.1.1) and nitrate reductase (E.C. 1.6.6.1) activities, net photosynthetic rate, and carboxylation efficiency, respectively, in 60-d-old plants. It also enhanced the seed yield by 31.1% over the control. The order of response of the plants to various auxins was 4-Cl IAA ≥ 7-Cl IAA > 4,7-Cl2 IAA = IAA > control.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Photosynthetic response of Vigna radiata to pre-sowing seed treatment with 28-homobrassinolide

Creator:
Fariduddin, Q., Ahmad, A., and Hayat, S.
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
carbonic anhydrase, carboxylation efficiency, chlorophyll, mungbean, net photosynthetic rate, seed yield, and stomatal conductance
Language:
Multiple languages
Description:
Surface sterilised seeds of mungbean (Vigna radiata L. Wilczek cv. T-44) were soaked in 0, 10-8, 10-6, or 10-4 M aqueous solution of 28-homobrassinolide (HBR) for 4, 8, or 12 h. The treated seeds were grown in sandy loam soil filled in earthen pots and sampled at 30, 40, and 50 d. Net photosynthetic rate, leaf chlorophyll content, carbonic anhydrase activity (E.C. 4.2.1.1), carboxylation efficiency, stomatal conductance, and seed yield at harvest were enhanced by the HBR treatment. The best combination was the pre-sowing seed treatment with 10-6 M HBR for 8 h. and Q. Fariduddin, A. Ahmad, S. Hayat.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public