[Advances in plant microRNA and stresses response.].

MicroRNAs (miRNAs) are endogenous 16-29 nt non-coding small RNAs that were are generally found in species and typically encoded by endogenous genes. They play an important regulatory role at post-transcription level by targeting mRNA cleavage and translation repression. More and more plant miRNAs had been predicted and identified along with the development of bioinformatics and experimental techniques.

[QTL mapping of plant height and ear position in maize (Zea mays L.)].

A molecular linkage map for the maize hybrid of cross between Ye478 and Dan340 was constructed by using 150 co-dominant SSR markers. The total map length was 1 478.7 cM with an average interval of 10.

[Comparative QTL mapping of resistance to sugarcane mosaic virus in maize based on bioinformatics].

The development of genomics and bioinformatics offers new tools for comparative gene mapping. In this paper, an integrated QTL map for Sugarcane mosaic virus (SCMV) resistance in maize was constructed by compiling a total of 81 QTL loci available with the Genetic Map IBM2 2005 Neighbors as reference. These 81 QTL loci were scattered on 7 chromosomes of maize, and most of them was clustered on chromosome 3 and 6.

[Construction of a SSR linkage map and mapping of quantitative trait loci (QTL) for leaf angle and leaf orientation with an elite maize hybrid].

Maize (Zea mays L.) breeders have begun selecting for more compact plants for higher density planting in order to increase yield per unit area. Leaf angle and leaf orientation are very important traits affecting maize plant type (compactness).

[Progress of chlamydomonas as a model organism].

The unicellular alga Chlamydomonas offers a simple life cycle, easy culture and isolation of series of mutants, established the techniques and tool kit for molecular genetics and genetics analysis. It is now becoming the model organism for studies on photosynthesis in plant, flagellar assembly and function, cell cycle and circadian rhythms, signal transduction, light perception and cell recognition. It is summarized the progress of study on Chlamydomonas as a model organism in this paper.