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| Comparison of agronomic characters and nutritional components of different purple yam resources in Deqing，Guangdong Province |
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| DOI：10.16768/j.issn.1004-874X.2017.08.007 |
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| Abstract: |
| Comprehensive evaluation on agronomic characters，nutrition and storage performance of 8 kinds of
yams from the town of Huilong，Maxu and Guanxu in Deqing，Guangdong was conducted. The results indicated that
Deqing have many farm varieties of yam（ 6 purple flesh varieties and 2 white flesh varieties）. The upper ends of
the tuber as the seeds were sowed in spring or summer，and their growth period was about 6 to 7 months. The purple
flesh was a high-producing lines，the yams DJH and HDZ were productive varieties. In winter，the growth potential of white flesh varieties（ DJB and HXB），was more luxuriant than the purple yams（ HXZ and DZ）. Many common
botanical characters in stems and leaves were shared among them. Protein，dietary fiber and starch content of the
purple yams were generally higher than those of the white yams，and the anthocyanin content was 34.6-3.51 times
of white yams，the anti-oxidative properties of tuber were better. The purple flesh color of tuber sorted as follows:
HDZ>GZ>DZ>DJH>GEH>HXZ. Through the evaluation on hardness of tuber in the varieties yams，it showed that
the purple yams had better water retention and storability. This study is conducive to the rational layout planting peak
of Deqing purple yams，to provide scientific basis for the breeding of excellent local yam germplasm. |
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