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Li C.-Y.,CAS Kunming Institute of Botany | Li C.-Y.,Honghe University | Zhang G.-Y.,Honghe Institute of Tropical Agricultural science | Hammer K.,University of Kassel | And 3 more authors.
Genetic Resources and Crop Evolution | Year: 2011

Based on literature sources and the authors' field surveys in the past 20 years (particularly in 2008 and 2009), a checklist of cultivated plants of Yunnan (Southwest China) was compiled. It contains 1,701 taxa belonging to 1,562 different species, 837 genera and 190 families. The alphabetically ordered articles for the taxa contain the botanical name, the plant family, Chinese name and folk names, details of plant uses, information about the plant's regional distribution, places of origin, and references to relevant, mostly Yunnan literature sources. The checklist provides a useful tool for the exploration of plant genetic resources and may be equally interesting for agronomists, horticulturists, botanists, ethnobotanists and others who are interested in cultivated plants. © 2011 Springer Science+Business Media B.V.

Qiu B.,South China Agricultural University | Qiu B.,Honghe Institute of Tropical Agricultural science | Zhou Z.,Chinese Academy of Agricultural Sciences | Xu Z.,South China Agricultural University
Florida Entomologist | Year: 2013

The larval parasitoid Microplitis manilae Ashmead (Hymenoptera: Braconidae) is a potential biological control agent of Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae). To understand the preference and fitness of M. manilae on larval instars of S. exigua, we compared host choice, development, and life table parameters when different larval instars of S. exigua were supplied in the laboratory. Results showed that parasitism of 2nd or 3rd instar larvae was significantly higher compared with other instars. The intrinsic rate of increase (r), finite rate of increase (γ), net reproduction rate (R0 ) and mean length of a generation (T) were significantly affected by which larval instars were attacked. The maximum values of r, γ, R0 and T were observed when M. manilae parasitized 2nd instar S. exigua larvae. Therefore, we conclude that the 2nd larval instar of S. exigua represents the optimum host stage and suggest that 2nd larval instar of S. exigua will be the most suitable host stage for mass production of M. manilae as well as the best instar to target for biological control in the field.

Qiu B.,South China Agricultural University | Qiu B.,Honghe Institute of Tropical Agricultural science | Zhou Z.-S.,South China Agricultural University | Zhou Z.-S.,Honghe Institute of Tropical Agricultural science | And 3 more authors.
Environmental Entomology | Year: 2012

Microplitis manilae Ashmead (Hymenoptera: Braconidae), a larval parasitoid, is a potential biological control agent of both Spodoptera exigua (Hbner) and Spodoptera litura (F.) (Lepidoptera: Noctuidae). Aspects of the climatic requirements for development, including survival, longevity, and fecundity of M. manilae were studied at six constant temperature regimes (17, 20, 23, 26, 29, and 32°C) in the laboratory. The results showed that developmental duration for egg, larva, pupa, and the entire immature stages shortened in response to temperature increasing from 17 to 32°C. Survival rates of different developmental stages were higher at 2029°C than at other temperatures. Longevity of M. manilae adults shortened with increasing temperature. The maximum fecundity of M. manilae female equaled 261.0 eggs/female at 26°C. Minimum threshold temperature and effective accumulated temperature for completing a generation of M. manilae were 11.04°C and 205.98 degrees-days, respectively. Both intrinsic rate of increase (r) and finite rate of increase () of M. manilae did not differ between 26 and 29°C, but those were significantly higher at 26 and 29°C than at any other temperatures. The highest net reproduction rate (R0) was observed at 26°C, with the value of 97.77, but the lowest was 11.79 at 32°C. These results suggest that the parasitoid is well adapted to temperate and subtropical climates, which implies a significant potential for using M. manilae to control S. exigua because most of areas occupied by these two pests belong to temperate and subtropical regions in southeastern Asia. © 2012 Entomological Society of America.

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