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Start Over Coverage 565-568

2. 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