棉花学报
Mianhua Xuebao                                            ISSN 1002－7807 CN41－1163/S
Cotton Science                                           2004，Vol. 16，No.1，January 15

Contents

• RESEARCH REPORTS •
(3) Extraction of Total RNA and Cloning of Conservative Fragments of MADS-box Gene by RT-PCR in Upland Cotton…………………………………………………………………………LI Ji-gang, GUO San-dui

(8) Cluster Analysis And Sampling Methods for Core Collection Construction in Glandless Cotton……………………………………ZHANG Gui-yin, WANG Xing-fen, LIU Su-juan, et al

(13) Molecular cloning and characterization of aminopeptidase Ns from larvae midgut of Helicoverpa armzigera Huibner resistant to Bt transgenic cotton
………………………………………………………SU Jian-ya, ZHOU Xiao-mei, ZHANG Tian-yi, et al

(21) The Response of Cotton Canopy to Different Irrigation
…………………………………………………………………Lü Xin, ZHANG Wei, WANG Deng-wei, et al

(26) Effects of Ultra-dry Storage on Vigour and Physiological Characteristics of Cotton Seeds………………………………………………… SUN Ai-qing, GAO Rong-qi, YIN Yan-ping, et al

(31) Genetic Analysis on Spatial Distribution of Cotton Bud, Flower and Boll in South Xinjiang …………………………………………………………ZHANG Wen-ying , MEI Yong-jun, GONG Ping

(36) Spatial Change Analysis of Regional Cotton Production System
………………………………………………………………………………………ZHOU Zhi-guo,CAO Wei-xing

(40) Preliminary Study on the Methods of Extracting Cotton Genomic DNA
………………………………………………………………………………………MA Xuan, DU Xiong-ming

(44) Effect of Back-crossing Times on Bollworm Resistance and Economic Traits of Transgenic Bt(Bacillus thuringiensis) Cotton …………… XING Chao-zhu, GUO Li-ping, WANG Hai-lin, et al

(49) Quantitative Analysis of Agricultural Household Response to Ratio of Grain and Cotton Price Change in China…………………………………………………………………………ZHANG Li-zhen

• REVIEW & INTERPRETATION •
(55) The Factors Affecting Somatic Embryogenesis and Plant Regeneration in Cotton ………………………………………………………………………CHI Ji-na, LIXi-huan, WANG Xing-fen, et al

• RESEARCH & NOTES •
(62) Isolation and Partial Purification of an Extracellular Metabolite from a Bacillus subtilis NCD-2 Strain against Verticillium dahliae
…………………………………………………………………………… Li She-zeng,LU Xiu-yun,Ma Ping,et al

(64) Genetic Analysis for Yield and Yield Factors in Four Bt Transgenic Cotton Lines……………………………………………………………………… XU Qi, JIAO Ming-zhen, LIU Hui-min