Three new species of the genus Drymeia Meigen (Diptera: Muscidae) from the Qinghai-Xizang (Tibet) Plateau, China

Three new species of Drymeia are described from Qinghai-Xizang (Tibet), China: Drymeia fimbricauda Xue, sp. n., Drymeia katepimeronipilosa Xue, sp. n. and Drymeia quadratimacula Xue, sp. n. The type specimens of the new species are deposited in the Institute of Entomology, Shenyang Normal University. In addition, a generic diagnosis of Drymeia is given, and five species assigned to the genus Drymeia Meigen in Flies of China are transferred to the genus of Spilogona Schnabl. In the genus Drymeia, 48 species are now known from China. The effects of the uplift of the Qinghai-Xizang (Tibet) Plateau on the structural diversity of Drymeia species are discussed

The reluctant analyst

We estimate the dynamics of recommendations by financial analysts, uncovering the determinants of inertia in their recommendations. We provide overwhelming evidence that analysts revise recommendations reluctantly, introducing frictions to avoid frequent revisions. More generally, we characterize the sources underlying the infrequent revisions that analysts make. Publicly available data matter far less for explaining recommendation dynamics than do the recommendation frictions and the long-lived information that analysts acquire but the econometrician does not observe. Estimates suggest that analysts structure recommendations strategically to generate a profitable order flow from retail traders. We provide extensive evidence that our model describes how investors believe analysts make recommendations, and that investors value private information revealed by analysts' recommendations

Identification of a cosmid clone containing the Neurospora crassa lys-5 and un-4 genes, isolation of a partial lys-5 cDNA and associated chromosome walking.

The un-4 gene of Neurospora crassa was cloned to determine the limits of a chromosome walk on linkage group VI (LGVI) and to allow analysis of un loci on LGVI. Subsequent analysis identified the lys-5 locus on the same cosmid clone as un-4. We have isolated and sequenced a partial lys-5 cDNA clone and initiated a chromosome walk from the lys-5, un-4 cosmid clone

Relatedness of resistance to anthracnose and to white rot in Chinese wild grapes

Resistance to anthracnose and to white rot in 56 accessions of 13 Chinese wild Vitis species, V. amurensis, V. quinquangularis, V. romanetii, V. adstricta, V. pseudoreticulata, V. piazezkii, V. davidii, V. davidii var. cyanocarpa, V. liubanensis, V. qinlingensis, V. bashanica, V. yeshanensis and V. hankockii was evaluated under natural conditions in 1996-1998. All 56 accessions and the 13 species showed resistance to anthracnose. All nine accessions of V. quinquangularis, and one accession each of V. romanetii, V. adstricta and V. pseudoreticulata exhibited susceptibility to white rot; the remaining 44 accessions (78.57 %) and the other 9 species presented resistant to grape white rot. Two V. vinifera cultivars (‘Cabernet Sauvignon’ and ‘Chardonnay’) were susceptible to anthracnose and highly susceptible to white rot. The r-value of susceptibility indices between anthracnose and white rot in the 56 accessions is insignificant. In Chinese wild grapes, the mechanisms for producing resistance to both diseases would be very different, but inheritance of resistance to these two diseases in a certain cross is somewhat related by molecular data.

Evaluation of agronomic traits in Chinese wild grapes and screening superior accessions for use in a breeding program

This study was conducted to evaluate 15 agronomic traits in 67 accessions of 13 Chinese wild Vitis species. The results have been used to screen superior accessions for grape breeding in the future. Chinese wild Vitis had high diversity in economic traits among the species, such as bud-burst date, blooming date, berry ripening date, bunch weights, berry weights, berry soluble solid contents, berry acid contents, and vine production. Bunch weights of 56 Chinese wild accessions and berry weights of 12 Chinese species (except V. davidii) were much smaller than those of the two European cultivars. In our 25-year of evaluation on disease resistance and economic qualities in this Chinese germplasm, we suggest that V. quinquangularis, V. amurensis, V. yeshanensis, V. romanetii, and certain accessions in V. liubanensis be the first potential materials chosen for breeding.