ISHS Acta Horticulturae 623: XXVI International Horticultural Congress: Plant Genetic Resources, The Fabric of Horticulture's Future
GENETIC DIVERSITY OF CHINESE JUJUBE (ZIZIPHUS JUJUBA MILL.) |
| Author: | L. Mengjun |
| Keywords: | Adaptability and resistibility, botanical character, fruit nutrition chromosome, pollen, DNA |
| Abstract:
Chinese jujube (Ziziphus jujuba Mill.), with a very distinct character of deciduous bearing branch, is a native fruit & medicinal plant of China. It has been introduced into more than 30 countries and is becoming increasingly popular for its wide adaptation, easy management, early bearing, rich nutrition, and multi-use. Using proper cultivar, commercial cultivation of Chinese jujube can be carried out under the condition of annual average temperature 5.5-22°C, annual rainfall 87-2000mm, and soil pH 4.5-8.4. It also has high diversity in the levels such as chromosome karyotype (1A, 2A, 3A, 1B, 2B, 2C); shape, size (11.5-22.1µ×21.0-26.3µ) and surface sculpture of pollen; leaf length (2.3-10.1cm) and flower diameter (2.9-10mm); especially the shape, colour, weight (2-46g), growth period (60-145d), soluble solid (17-45%), Vc (61-1174mg/100g.fw) and cAMP content (2-302nmol/g.fw) of fruit; as well as the RAPD and isoenzyme (7 kinds) patterns. Diversity within some cultivars was also revealed by RAPD. | |
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