Acta Botanica Croatica, Vol. 65 No. 1, 2006.
Izvorni znanstveni članak
Effect of 28-homobrassinolide on the nitrate reductase, carbonic anhydrase activities and net photosynthetic rate in Vigna radiata
Q. Fariduddin
S. Hayat
B. Ali
A. Ahmad
Sažetak
The foliage of fifteen day-old Vigna radiata seedlings was sprayed with water (control) or with a 10–10 M, 10–8Mor 10–6 Maqueous solution of 28-homobrassinolide (HBR). Samples of the treated plant material, collected at 30/50 days after sowing (DAS), were assessed
for the activities of carbonic anhydrase (CA) and nitrate reductase (NR); leaf chlorophyll content (Chl); stomatal conductance (gs); carboxylation efficiency (CE), and net photosynthetic rate (PN). 28-homobrassinolide generated a significant impact on all these
characteristics and on seed yield at harvest. Among the treatments, 10–8Mproved best, in which case the values for the above six physiological parameters in 30 days-old plants increased by, respectively, 31, 29, 27, 28, 29 and 33% over the control. Moreover, the harvest weight of the seeds of these plants was 27% larger than in the control.
Ključne riječi
Brassinosteroids; carbonic anhydrase; nitrogen; nitrate reductase; photosynthetic rate; seed; yield; Vigna radiata
Hrčak ID:
3344
URI
Datum izdavanja:
15.5.2006.
Posjeta: 2.236 *