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 Posted: Sat 22:25, 29 Jan 2011 Post subject: Suwan selections heterosis of maize utilization mo |
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Suwan selections maize heterosis utilization model
, And its high level of production certainly. (4) the performance advantage of germplasm from the parent asked the additive effects and dominance effects and epistatic effects of the sum, which by the GCA effect of stabilizing additive effect is cumulative genetic recombination fraction can be, and SCA effect is dominant and epistatic interaction by a specific genome to make a decision. 3.2 The advantage of dominant groups and dominant pairing mode cell output is a comprehensive reflection of the dominant groups in this study with different pure lines, and from tropical germplasm groups selected Suwan selected lines, their genetic base is very rich, broad, SCA value as a portfolio by the dominant groups, determine the advantages of model indicators. This study will combine ScA positive effect the value of parents classified as a different dominant groups, and according to blood relationships create different strengths pairing mode; on the combination of SCA showed negative effects of the value of parents that belong to the same dominant groups, inconvenience group with hybrids. The results of Table 2 classified analysis that $ 611 and B84, $ 37 and B84, as early as four yellow, S11 and 78599, Mo17, 48 and Dan 340, Mol7, T32 and 78599, Dan 340 for the same dominant groups. Comprehensive analysis that can initially be Suwan selections advantage of pairing mode summarized as: Suwan selections �� Ludahonggu, Suwan selections �� Rui Dema teeth. 3.3 The broad base of the genetic potential of selected lines Suwan is a wide range of groups in the genetic line or improved from direct elections, and between different inbred lines may show a higher SCA. And its selections have abundant genetic variation, and more genetic potential to select, choose the appropriate test species, the use of rational choice approach is to ensure the continuous improvement of good genes,[link widoczny dla zalogowanych], but also to ensure that a wide range of genetic variation; has retained a wide range of genetic potential, and outputs results of directional selection is crucial. Inbred lines as testers to test cross were selected, in essence, a directional selection process,[link widoczny dla zalogowanych], with a clear genetic trade-offs tend to L7]. Germplasm used in the experiment the backbone of the five inbred lines as testers developed a Suwan selections of blood types and relative share. Measured both the GCA also detected in the SCA,[link widoczny dla zalogowanych], verify Suwan germplasm selections and five inbred lines of the specific interaction between the full description, Suwan selections have a strong genetic potential and the abundant genetic diversity, so Suwan maize breeding germplasm is an invaluable germplasm resources. However, diversity should be adopted to test markers for genetic diversity of germplasm Suwan ongoing. The test selection and recurrent selection and inbred group with obvious significance. The results showed: T32 �� t384 is a combination of the strongest advantages. This is Chen Zehui (2005) L4 have been bred from germplasm containing Suwan, while promoting the southwestern region of larger hybrids that can use the advantages of ReidXSuwanl is consistent with the mode. BIBLIOGRAP J ZHANG Shi-Huang, Ze-Bin Peng, Xin-Hai Li. Corn advantages and Germplasm Enhancement, Improvement and Innovation EJI. Agricultural Science, 2000,33 (suppl.) :34-39. Fan Xing Ming, Tan Jing, Yang Junyun, et al. Exotic tropical, subtropical and temperate maize inbred lines of maize yield tl Combining Ability and Genetic Relationship between [J]. Agricultural Sciences in China, 2002,35 (7) :743-749. Ren Hong, Zhengchang Xiang, Yang Bin, et al. Suwan maize germplasm characteristics and breeding in the [J]. Crop Journal, 1998 (Supplement) :45-46. Chen Zehui, Gao Xiang, Zhu Yunfang. Suwan maize germplasm with China's four major advantages of combining ability and [knife. Maize Science, 2005,13 (1) :5-9. Chen Zehui, Gao Xiang. Suwan Germplasm Line of combining ability and advantages of EJ]. Agricultural Science,[link widoczny dla zalogowanych], 2000,[link widoczny dla zalogowanych],33 (suppl.) :113-118. SansernJampatong, PornRungchang. MaizeProductionandResearchforGeneticImprovementinThailandEJ]. Heredi-tas, 2000,22 (6) :423-429. Double your iron, Zheng Lian, Liu Dingliang, et al. Synthetic Maize Population combining ability and genetic potential of [J]. Crop Science, 2000,1 (26) :28-36. (Editor: Yang Xiaorong) Participation Ming rL [[[[[[[
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