خيارات البحث
النتائج 1 - 10 من 502
Variations in pathogenicity of rice blast fungus as related to its epidemics in Sichuan, China
1996
Peng Guoliang (Sichuan Academy of Agricultural Sciences, Luzhou (China). Inst. of Rice and Sorghum)
Study on yield and disease resistance and growth period of rice cultivated in mixed and polycrossed varieties
1996
Liu Guomin (Sichuan Academy of Agricultural Sciences, Luzhou (China). Inst. of Rice and Sorghum Research)
Analysis on the main traits and discussion on high-yield breeding of early-season hybrid rice
1996
Jiang Kaifen | Zheng Jiakui | Wen Hongchan (Sichuan Academy of Agricultural Sciences, Luzhou (China). Inst. of Rice and Sorghum)
Genetic studies on root growth ability in seedling stage of rice
1996
Zheng Jiakui | Yuan Zuolian | Yin Guoda (Sichuan Academy of Agricultural Sciences, Luzhou (China). Inst. of Rice and Sorghum)
The variation of root growth ability in seedling stage among rice varieties and its heterosis and genetics were studied with 8 rice varieties and 4 X 4 incomplete dialle crosses. There were significant difference of numbers of root, root length, root width and root growth ability among varieties. The heterosis was great and variation among crosses was great. They were mainly controlled by non-additive heredity
اظهر المزيد [+] اقل [-]Studies on heterosis and combining ability of contents of protein and free amino acid in rice grain
1996
He Guanghua | Yuan Zuolian | Zhen Jiakui (Sichuan Academy of Agricultrual Sciences, Chongqing (China). Inst. of Rice and Sorghum)
[Evaluation for the effect of waterlogged field on the soil fertility and crop yield]
1996
Wang Yunbin | Zhu Xingming | Zeng Qingxi (Sichuan Academy of Agricultural Sciences, Luzhou (China). Rice and Sorghum Research Inst.)
The variability of maize root architecture as a key to différences in root lodging
1996
Guingo, E. | ARGILLIER, O. | Barrière, Yves,
Rationale for grain yield increase from upland rice seedling and its application effect.
1996
Xu Fuxian
Phylogenetic relationships of sorghum taxa inferred from mitochondrial DNA restriction fragment analysis
1996
Guo, J.H. | Skinner, D.Z. | Liang, G.H.
To elucidate the evolutionary history and affinity of sorghum species, 41 sorghum taxa were analyzed using variability in mitochondrial DNA. Analysis of species relationships at the molecular level can provide additional data to supplement the existing classification based on morphological characters and may also furnish unexpected but useful information. Total DNA extracted from each of the sorghum accessions was digested with each of five restriction enzymes, BamHI, HindIII, EcoRI, EcoRV, and XbaI, and probed with five mitochondrial DNAs cloned from Sorghum bicolor. A total of 180 restriction fragments was detected by the 25 probe-enzyme combinations. Forty-three fragment bands were phylogenetically informative. Multiple correspondence analysis was performed to visualize associations among the accessions and suggested that section Eusorghum species may be divided into four groups, with Sorghum laxiflorum (section Heterosorghum) and Sorghum nitidum (section Parasorghum) appearing as outliers. A phylogenetic tree was assembled from mitochondrial restriction fragment data. The taxa analyzed formed three major groups comprising section Heterosorghum (group D, section Parasorghum (group II), and all accessions in section Eusorghum (group III). Group III is further divided into four groups: (i) two sweet sorghums and shattercane; (ii) Sorghum halepense, Sorghum miliaceum, Sorghum hewisonii, Sorghum aethiopicum, Sorghum verticilliflorum, and S. bicolor, including Sorghum sudanense (sudangrass), the Chinese Kaoliangs, and a number of commercial sorghum inbreds from the U.S.A.; (iii) Sorghum propinquum; and (iv) Sorghum arundinaceum, Sorghum niloticum, Sorghum almum, Sorghum controversum, and the Chinese material C-401 and 5-27. Results indicate that the analysis of fragmented mitochondrial DNA was diagnostic and useful in sorghum phylogenetic and taxonomic research at the species, subspecies, and race levels, and can complement results from those analyses using nuclear ribosomal DNA and chloroplast DNA that effectively distinguish taxa at species and genus levels.
اظهر المزيد [+] اقل [-]Oorsake van die vergeling van mielies.
1996
Jooste S.P. | Jordaan J.
