Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Role of presowing seed treatment on germination, seedling growth and longevity of ber (Zizyphus mauritiana Lam) seeds.

Abstract

In West Bengal, India, pre-treatment with GA at 200 ppm was found effective in increasing germination and extending seed longevity of ber. Maximum germination of 98.76 and 77.82% was obtained with seeds pre-treated with 200 ppm GA, sown at 1 and 17 months after treatment, respectively, whereas untreated seeds recorded 86.23 and 24.58% germination in the 2 respective sowings. Germination was faster with 1% thiourea, but short duration of germination was noticed in seeds pre-treated with chlormequat (1000, 2000 ppm). Gibberellic acid separately and in combination with nutrient (composed of 1% Microshakti and 1000 ppm K2HPO4) caused maximum seedling growth. Gibberellic acid at 400 ppm and chlormequat at 1000 ppm increased the extent of polyembryony in seeds. Authors' summary. KEYWORDS: TROPAG | Ziziphus mauritiana | Fruit and Nut Crops | Ziziphus | germination | seedlings | seed longevity | plant growth substances | India | West Bengal.