人为活动导致的CO2等温室气体排放增多加速了全球气候变化.土壤微生物代谢活动会影响陆地与大气间的碳交换,进而改变全球碳库.然而,目前关于土壤微生物群落对大气CO2浓度上升的反馈机制仍研究较少.本研究利用第四代基因芯片技术,结合多种传统宏基因组学学统计方法和分子生态网络分析,从微生物群落功能结构的角度探究了在多种混合植被条件下(植物物种数为4),土壤微生物整体功能及其驱动的碳、氮循环对大气CO2浓度
反刍动物的瘤胃中含有完善的纤维素降解微系统,系统中存在的微生物能够对纤维素进行有效的降解并生成甲烷.本实验以瘤胃胃液为接种源,以小麦秸秆为发酵底物,在控制发酵温度为37℃恒温条件下,研究不同接种物比例对厌氧发酵产气特性的影响.结果显示随着接种量的增加甲烷产量逐渐升高,当接种量为9％时,甲烷积累产量达到最大值为2676ml (0.73 L/g TS),最高日产气量为154ml,甲烷含量为54.9％;
Five dihydrochalcones including phlorizin, trilobatin, 3-hydroxyphloridzin, sieboldin (3-hydroxytrilobatin) and phloretin 2-xyloglucoside were isolated from the fruit of Malus Red Splender.The chemica
This work determines and analyzes methanol extracts from Malus domestic flowers at two stages of flowering.The initial flowering extract had more proximate, mineral and amino acid contents and also ri
The content of organic matter in soil often affects plant growth which can be reflected by photosynthetic capacity, such as gas exchange and chlorophyll fluorescence.The main objective of the research
Fine-root (≤ 2 mm in diameter) system plays a pivotal role in water and mineral uptake in higher plant, however, the impact of fine root architecture on tree growth and development was not fully under
Polyamines (PAs) participate in the defense reaction against several environmental conditions that causes oxidative stress.Solar radiation stress is common in many fruit-growing regions of the world a
Changes in apple leaf and fruit peel photosystem-Ⅱ (PSII) photochemical process were investigated under field high light conditions (1800 μmoles m-2 s-1) in North Patagonia.This was to increase unders
The role of mitochondrial alternative oxidase (AOX) pathway in photoprotection in Malus hupehensis (Pamp.) Rehd.leaves under drought stress was studied.The results indicated that drought increased the
To determine the optimum exposed length of M.9 for apple genetic resource, the Seohong, Summer Dream and Hongguem grafted on M.9 rootstock were planted in such a way that the exposed length of the roo