Variation in growth, nut yield and quality of Macadamia in clonal trial at Thach Thanh, Thanh Hoa province
Keywords:
Variation,, growth, yield, quality, MacadamiaAbstract
The objective of the study was to evaluate the variation in growth, yield,
and nut quality of 21 macadamia clones tested in Thach Thanh, Thanh Hoa
province. The results of the study showed that there was a significant
difference in diameter, height, and canopy diameter of the tested
macadamia clones at the age of 6 and 8. Nut yield, fruit diameter, nut
diameter, and the kernel diameter, were significantly different between
clones. The ranking of clones in average nut yield was stable between age 6
and 7 years old, wherein the high yielding clones at age 6 years were also
the high yielding clones at age 7 years. Clones A38, OC and A4 were of
high yield at all ages. There was a strong similarity between nut diameter
and kernel diameter, the clones with large nuts often had large kernels and
vice versa. The clones with large kernels including A4, A38, A16, 842, 816
and 849 with average kernel diameter of 1.75 to 1.83 cm. The evaluation
results also showed that it is necessary to evaluate the nut yield and kernel
diameter of Macadamia in successive years to accurately determine the
potential of the cultivar.
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