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Received:September 05, 2017Revised:November 02, 2017
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Half-sib Progeny Seedling Growth Differences Analysis of the 1.5th Generation Seed Orchard for Castanopsis hystrix
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Abstract:
Seeds of 34 half-sib families were collected from 1.5th generation seed orchard of Castanopsis hystrix, all the seedlings were planted in the nursery garden. The plant height, ground diameter, leaf number, photosynthetic capacity (SPAD), leaf length, leaf width, leaf area were measured and the leaf length-width ratio were calculated. The result shows that after 15 months growth, the mean height of each family was 47.2cm and the ground diameter was 5.4mm. The coefficient of variation of plant height and ground diameter were 25.4% and 20.7%, respectively. Mean leaf number of each family was 55.3 and mean SPAD value was 38.2. Mean leaf length, mean leaf width and mean leaf area were 9.0cm, 2.5cm and 14.3cm2, respectively. The mean leaf length-width ratio was 3.6. Analysis of Variance indicated that all the eight phenotypes behaved significant differences between families. Referencing the plant height, ground diameter and the coefficient of variation, four half-sib families A02, A08, A15 and A31 were selected as their excellent performance in the seedling stage.
Key words:  Castanopsis hystrix; growth of seedling stage; half-sib family

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