The present study aimed to analyze an early epidemic anthracnose case in a Chinese fir (Cunninghamia lanceolata) third-generation seed orchard (2 hm2) of Guangdong. The results indicated that the anthracnose occurred over the first two years (2016—2017) with little impact on the health of the seed orchard. In 2018 (the seed orchard was two and half years old), the anthracnose had a breakout and greatly impacted the seed orchard leading to 42.5% of the grafted plantlets suffering an anthracnose disease. Regarding the clonal infection rate in 2018, it was found that different breeding parents (n=56) expressed a different resistance abilities to anthracnose with an infection rate ranging from 9.1% to 81.8%. Five breeding parents, including cx731, cx841, cx859, cx872, cx876, were preliminarily proved to be resistant to anthracnose at a relatively high level. These parents were important materials for the Chinese fir anthracnose-resistance breeding programs.
YANG Bai-qun
,
HU De-huo
,
ZHENG Hui-quan
,
LIU Wei-xin
,
Lü Yu-zhou
. Preliminary Study on Anthracnose Resistance of Chinese Fir Third-generation Seed Orchard Parents[J]. Subtropical Plant Science, 2020
, 49(03)
: 196
-199
.
DOI: 10.3969/j.issn.1009-7791.2020.03.007
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