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| 1 | Mapping and characterization of a tiller-spreading mutant lazy-2 in rice显示文摘Tiller angle of rice is an important agronomic trait that contributes to breed new varieties with ideal archi-tecture. In this study, we report mapping and characteriza-tion of a rice mutant defective in tiller angle. At the seedling stage, the newly developed tillers of the mutant plants grow with a large angle that leads to a lazy phenotype at the mature stage. Genetic analysis indicates that this tiller- spreading phenotype is controlled by one recessive gene that is allelic to a reported mutant la. Therefore, the mutant was named la-2 and la renamed la-1. To map and clone LA, we constructed a large mapping population. Genetic linkage analysis showed that the LA gene is located between 2 SSR markers RM202 and RM229. By using the 6 newly-developed molecular markers, the LA gene was placed within a 0.4 cM interval on chromosome 11, allowing us to clone LA and study the mechanism that controls rice tiller angle at the molecular level. | LIPeijin ZENGDali LIUXinfang XUDan GUDai LIJiayang QIANQian | 2003 | Chinese Science Bulletin2003，48，24： | 7 |
| 2 | Genetic analysis of rice allelopathy显示文摘A double haploid population derived from an-ther culture of ZYQ8/JX17, a typical indica and japonicahybrid, was used in this study. The inhibited effect ofwater-soluble extract of 123 DH pure lines leaves on the let-tuce roots growth was investigated, and the QTLs analysis of rice allelopathy was carried out. Totally, four QTLs related to rice allelopathy were detected, and they were on chromo-somes 3, 9, 10 and 12, respectively. The LOD scores were3.40, 2.68. 2.75 and 3.08, respectively. Among them, additive effects of the QTLs on chromosomes 3 and 10 were 1.65 and 1.43, on chromosomes 9 and 12 were -1.44 and -1.58, re-spectively. Allelopathy characteristics of another three com-mon rice varieties were also studied. | ZENGDali H.Fujimoto 等 | 2003 | Chinese Science Bulletin2003，48，3： | 3 |
| 3 | QTL analysis of rice(Oryza sativa L.)tiller angle in a double haploid population derived from anther culture of indica显示文摘Tiller angle,the inclination between the caulisand its tillers,is one of the important featuresof the plant type in cultivated rice.It has greatsignificance in high yield breeding of rice.Ifthe tiller angle is too small,the resistance todisease may be reduced.On the other hand, big tiller angle is undesirable for high yieldingIn the present study,a DH population con- structed via anther culture of F_1 hybrids ofjaponica/indica(ZYQ 8/JX 17)was used forQTL analysis of the tiller angle.The | QIANQian HEPing TENGSheng ZENGDali ZHULihuang | 1999 | Chinese Rice Research Newsletter1999，7，4： | 2 |
| 4 | QTL analysis of rice (O.sativaL.) root vitality in a double halpoid population derived from anther culture of an indica/japonica cross显示文摘 | TENGSheng ZENGDali ZHENGXianwu KunihiroYasufumi QIANQian ZHULihuang | 2000 | Chinese Rice Research Newsletter2000，8，1： | 0 |
| 5 | QTLs analysis of rice peduncle vascular bundle and panicle traits显示文摘The vascular bundle in plants plays an important role in transportation of photosynthetic products, mineral nutrients, water, and so on. Significant positive correlations were found between grain yield, panicle traits and the No. Of peduncle vascular bundles. So, it is very important to study the inheritance of peduncle vascular bundle, which is a quantitative trait. | KYASUFUMI HUANGDanian ZHULihuang TENGSheng QIANQian ZENGDali | 2001 | Chinese Rice Research Newsletter2001，9，2： | 0 |
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