Morphological and germination physiognomies of Carissa carandas seedlings influenced by seed storage at ambient conditions

Abstract

The present study was taken up to know the morphological and germination physiognomies of karonda (Carissa carandas) seeds influenced by seed storage period at ambient conditions (26 ⁰C temperature and 55 % RH). Seeds were subjected to store at 10, 20, 30, 40, 50 and 60 days at room temperature (26⁰C). Germination percentage and various morphological characteristics viz., vigour index, fresh weight of shoot and root, dry weight of shoot and root, root to shoot ratio were recorded. Among stored seeds 10 days old seeds recorded highest germina-tion percentage (57 %) and 60 days old seeds recorded lowest germination (20.33 %). At the end (90 days after sowing) 10 days old seeds again possessed higher fresh weight of root (0.300 g) and shoot (1.240 g), dry weight of root (0.103 g) and shoot (0.487 g), root to shoot ratio (0.212) and vigour index (1772.70 cm) among stored seeds. These physiological observations were quite similar with the freshly harvested seed which found maximum values for all the parameters owing to higher moisture content. Karonda seeds showed good viability upto10 days thereafter its value declined and it reached minimum after 60 days of storage.

Influence of IBA Concentrations on the Success and Growth Characteristics of Grape Rooting Cuttings (Vitis vinifera L.)

“…The increased number of roots may be due to the effect of auxin, which enhances cell division and elongation, root differentiation, and its role in mobilizing reserve nutrients to the root initiation sites, thus producing a greater number of roots per cutting (Chakraborty & Rajkumar, 2018). Thus, providing carbohydrates that supply energy and the carbon skeleton for the synthesis of organic compounds that are used to formation roots (Deepika et al, 2015). The results agreed with what was reported by Stancato et al, (2003) and Kaur et al, (2022), who attributed the reason for the increase in the number of leaves to strong rooting, which enables the cuttings to absorb more nutrients and thus produce more leaves.…”

Assessment of various plant growth substances on germination rates and seedling vigor in acid lime seedlings (Citrus aurantifolia Swingle) Cv. PDKV lime

“…Similarly in positive effect on to emergence of new embryo initiation supported polyembryony percentage. The findings are supported by Burns and Coggnies (1969) [12] who reported the growth and uniformity of seedlings of sweet orange (Deepika et al 2014 [2] in Karonda). Additionally, under controlled laboratory conditions, factors such as optimal moisture levels, temperature, and absence of wind disturbance create favorable conditions for the quick activation of embryos.…”