Advances in thermoacidophilic methanotrophs from extreme environments Identification and Expression Analysis of the AQPs Gene Family in Pyrus communis A BAC Library Constructed to the Rice Cultivar Biosystematic Studies of Kengyilia stenachyra(Poaceae:Triticeae) Biosystematic studies of Kengyilia melanthera and K. kokonorica (Poaceae: Triticeae) Cytological Studies of Hybrids of Roegneria ciliaris with R.alashanica and R.magnicaespes(Poaceae:Triticeae) A Biosystematic Study on Hybrids Between Psathyrostachys huashanica and Two Species of Roegneria The Genome Constitution of Roegneria Grandis Keng et S. L. Chen (Poaceae: Triticeae) Genome Analysis in Wheat Breeding for Disease Resistance