Artocarpus chaplasha: Establishment and Initial Growth Performance at Elevated Temperature and Saline Stresses

Abstract

Like any other natural resources, forest flora may experience the extreme threat of elevated temperature and saline water submergence at different stages of their lives i.e. from germination to maturity due to climate change effects. The overall aim of the study was to measure the effect of higher temperatures along with saline water irrigation on survival and initial growth during seedling stage of Artocarpus chapalasha. The experiment was conducted in temperature-humidity-photoperiod regulated plant growth chamber during stipulated period to measure the growth performance of randomly selected seedlings. Within three different elevated temperatures viz. 30 o C, 32 o C and 34 o C, the seedlings were given three different saline conditions such as 0.5 g/L, 1.5 g/L and 2.5 g/L NaCl concentrations. Results found from the experiment was that, seedlings of Artocarpus chaplasha reared at different temperatures and saline water treatments showed stunted growth than reared at existing outdoor temperature (26.31°C) irrigated with regular fresh water. Seedling growth at three different parameters such as height, collar diameter and number of leaves showed that with increasing temperature individuals respond negatively to increasing saline condition. The seedling's growth occurred at every day in height, collar diameter and leaf. However, growth rate reduced later during the observation.The combined effect of high salinity and higher elevated temperature results in seedling mortality. Therefore, Artocarpus chaplasha may not thrive at higher temperature and salinity intrusion at its early growing period in plantation and natural forest areas.

Gmelina arborea Roxb. Seedlings Treated at Elevated Temperature in Plant Growth Chamber

“…(family: Verbenaceae) seedlings to enunciate this species' ability to withstand higher temperature than its normal range (21-28°C; Jensen, 1995) at its initial stage of life. Similar previous experiments were taken in place with Artocarpus chaplasha and Swietenia macrophylla and found with different results; positive growth at elevate temperature for Swietenia macrophylla (Rahman et al, 2013) and negative growth and survivability of Artocarpus chaplasha (Rahman et al, 2012) at elevated temperature.…”

“…There are some negative responses also where seedlings of Artocarpus chaplasha showed stunted growth and mortality to elevated temperature conditions (Al-Amin, 2009;Rahman et al, 2012). Seedlings of Artocarpus chaplasha reared at different temperatures and saline water treatments showed stunted growth than reared at existing outdoor temperature irrigated with regular fresh water.…”

“…Seedling growth at three different parameters such as height, collar diameter and number of leaves showed that with increasing temperature individuals respond negatively. Moreover, the combined effect of high salinity and higher elevated temperature results in seedling mortality (Rahman et al, 2012).…”

“…Due to climate change effects, forest flora may experience the extreme threat of elevated temperature at different stages of their lives (Rahman et al, 2012). As, it is apparent that there is a close relation between the climate and the vegetation it supports (Champion et al, 1965).…”

Effect of extraction solvents on phenolic contents and antioxidant capacities of Artocarpus chaplasha and Carissa carandas fruits from Bangladesh

“…Study on the phenolic content and antioxidative properties of Bangladeshi fruits has drawn considerable attention now a day [13,14] [15]. The methanol extract of leaf of Artocarpus chaplasha Roxb.…”