Effect of controlled irrigation on physiological and biometric characteristics in teak (Tectona grandis) seedlings
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2012, Vol 8, Issue 3
Abstract
Effect of controlled irrigation in physiological and biometric characteristics in teak seedlings is monitored at Forestry College in Kerala, India. Six month old seedlings of Teak ([i]Tectona grandis[/i] L. f.) were raised in polybags. Irrigation was done once in a week. Daily evapotranspiration was calculated and treatments IW/ET=1, IW/ET=0.6, IW/ET=0.3 were irrigated with 100, 60 and 30 per cent of cumulative evapotranspiration. A control without irrigation (IW/ET=0) was also maintained. Physiological as well as biometric observations were carried out at regular intervals. Canopy air temperature difference (CATD) was measured using a hand held infrared thermometer and it was observed that seedlings from well watered treatments (IW/ET=1 and 0.6) showed negative CATD whereas treatments IW/ET=0.3 and IW/ET=0 showed positive CATD throughout the growing period. Seedlings in the treatment IW/ET= 0 and 0.3 showed a significant reduction in relative chlorophyll content, seedling height, collar diameter, number of leaves, total dry weight and relative growth rate whereas in IW/ET=1 and 0.6 these parameters were higher and there was no significant difference observed between these two well watered treatment. In the case of root shoot length ratio and root shoot biomass ratio IW/ET=0 was superior over other three treatments.
Authors and Affiliations
C. Sneha, A. Santhoshkumar, K. Sunil
Dynamics of Pinus sylvestris L. needles activity in Predbaikal’ye forests
The study was aimed to analyse changes in peroxidase activity of common pine needles throughout the year. The needles of the 1-st, 2-nd and 3-d years were collected. Total activity of guaiacol-dependent peroxi...
Endosulfan induced changes in growth rate, pigment composition and photosynthetic activity of mosquito fern Azolla microphylla
This paper is the first in a series reporting a study on the effects of different concentrations of insecticide, Endosulfan (0-600ppm) was premeditated on 5th day after insecticide exposure with respect to growth rate,...
Oxidant-Antioxidant disturbance in men classified as obese according to the preliminary WHO guidelines for Asians
Background: Though there are experimental and clinical evidences regarding oxidant-antioxidant disturbance in obese subjects, clinical data supporting the same in Indian male subjects is lacking. The objective of the pre...
GENETIC VARIABILITY OF CULTURED PLANT TISSUES UNDER NORMAL CONDITIONS AND UNDER STRESS
Изменение содержания оксида азота в корнях проростков пшеницы под влиянием лектинов азоспирилл
Показано, что лектин Azospirillum brasilense Sp7 в концентрации 40 мкг/мл вызывает два пика индукции синтеза оксида азота в корнях проростков пшеницы, происходящей через 3 и 26 ч совместной инкубации. Лектин мутантного п...