Objective

2

To study the quality inspection standard of seeds of

Belamcanda chinensis

and establish the quality grading standard of seeds of

B. chinensis

.

Method

2

The purity of seeds of

B. chinensis

from different producing areas was analyzed，and the 1 000-grain weight，water content，viability and germination rate of seeds of

B. chinensis

with different diameters were determined after diameter classification. K-means was used for cluster analysis to preliminarily formulate the quality grading standard of seeds of

B. chinensis

.

Result

2

There were obvious regional differences in the size of seeds of

B. chinensis

. The particle size of seeds of

B. chinensis

of Xiaochang，Dawu and Huanggang Academy of Agricultural Sciences in Hubei Province was larger and mostly between 4.5 mm to 5.5 mm. The seeds of

B. chinensis

from Tuanfeng，Qujing，Yunnan，and Anguo，Hebei province had smaller particle sizes than those from the other three producing areas，which were mostly between 3.5 mm to 5.0 mm. Arils in seeds of

B. chinensis

were removed by 10% NaClO to effectively break seed dormancy and significantly improve the seed germination rate. On this basis，the seed diameter was taken as the main grading index，and the seed moisture content，viability，germination rate and purity were taken as important reference indexes. The quality of seeds of

B. chinensis

was preliminarily divided into three grades，grade Ⅰ：seed diameter≥5.5 mm，moisture content≤10%，viability≥94%，germination rate≥60%，and cleanliness≥93%；grade Ⅱ：seed diameter≥4.5 mm，moisture content≤10%，viability≥90%，germination rate≥55%，and cleanliness≥85%；and grade Ⅲ：seed diameter≥3.5 mm，moisture content≤10%，viability≥84%，germination rate≥45%，cleanliness≥80%.

Conclusion

2

In this study，the quality grading standard of seeds of

B. chinensis

was preliminarily established to provide reference for the quality evaluation of seeds of

B. chinensis

and the breeding of improved varieties. In addition，the maturity and the storage time of seeds of

B. chinensis

have a greater impact on the quality of seeds，so it is recommended to select fully mature（dark black） seeds and new seeds for production.