云南的复叶耳蕨属(Arachniodes Bl.)植物

对云南产复叶耳蕨属植物进行了再次的分类订正研究,确认云南有该属植物20个种类,其中,华南复叶耳蕨Arachniodes festina(Hance)Ching和齿头复叶耳蕨A．aristata(Forst．)Tindale为云南分布新记录;将《中国植物志》等资料中的Acrorumohra dissecta、Arachniodes ailaoshanensis、A．australis、A．austro-yunnanensis、A．caudata、A．chinensis var．cornopteris、A．chinensis var．jinpingensis、A．chingii、A．dayaoensis、A．futeshanensis、A．gongshanensis、A．guangtongensis、A．lushuiensissis、A．pianmaensis,A.pianmaensis、A．pseudo-aristata、A.ppseudo-assamica、A．sshuangbaiensis、A．sinoaristata、A．sporadosora和A．triangularis等20个名称作为新异名处理。还列出了云南产该属植物的分种检索表、名称的处理及分类讨论、地理分布等。     

Orobanche icterica (Orobanchaceae) revisited

Orobanche icterica Pau, frequently regarded as a synonym for O. elatior Sutton, is lectotypified on Pau's original material from the herbarium of the Real Jardín Botánico in Madrid (MA 115079!). Its morphology is described with special emphasis on those characters which distinguish it from O. elatior. O. icterica is mainly found in the east of the Iberian Peninsula and sporadically in the south and north-west. It is considered to be close to O. elatior but deserving recognition at specific level.  © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society , 2005, 148 , 117–124.     

Vegetative anatomy of Ophiopogoneae (Convallariaceae)

CUTLER, D. F., 1992. Vegetative anatomy of Ophiopogoneae (Convallariaceae). The vegetative anatomy (particularly leaf) of species of Ophiopogon, Liriope and Peliosanthes is described from observations with light and scanning electron microscopy. A syndrome of leaf characters is present, including epidermal features; hypodermal fibre-like cells; raphides and unusual short, square-ended prismatic crystals arranged in plates; phloem with abundant sclerenchyma and frequent individual strands each composed of a sieve tube element and its associated companion cell; and vascular bundles with unusual orientation, which shows the very close inter-relationship between Ophiopogon and Liriope. Peliosanthes shares the phloem type, hypodermal fibre-like cells and raphides, but is less similar in epidermal characters and vascular bundle orientation. The significance of the unusual phloem type is considered in relation to similar types in other members of the Liliiflorae.     

蜘蛛抱蛋属的细胞分类学研究Ⅱ

文章报道了13种蜘蛛抱蛋属植物的染色体核型,并对属内核型进化规律作了总结。作者认为随体染色体和第1对染色体可以作为本属核型的特征染色体。染色体数目变异与花部式样密切相关。本属植物原始的染色体基数为x=19。此外,对非整倍性变异的主要机制也进行了讨论。     

中国腹刺斑螟生物学和线粒体COI基因序列初步记述

首次发现中国腹刺斑螟幼虫取食板栗叶片,描述了幼虫和蛹的形态特征,拍摄了幼虫和蛹的生活特征图和外形等结构特征图,初步描记了其在湖北省罗田县栗园的生活习性;对幼虫线粒体COI基因片段序列进行了提取、扩增、测序和分析,其5’端629 bp的DNA序列可以作为中国腹刺斑螟鉴定的分子标记。     

The distyly in Primula elatior (L.) Hill (Primulaceae), with a study of flowering phenology and pollen flow

Flowers of Primula elatior exhibit all the dimorphic traits typical of distyly. The difference in pollen production between pin and thrum flowers is not thought to be caused by the pollen size dimorphism. The percentage of pin pollen which is probably viable exceeds that of thrum pollen. In the population studied the morph ratio is 1:1, and plants are randomly dispersed with regard to morph type. Bumblebees are the main pollinators, and analysis of the stigmatic pollen load in naturally |xjllinated flowers shows that pin stigmas receive many more pollen grains than thrum stigmas. Intramorph pollination is considerable in pins, while thrums are subject to some differential pollination. Emasculation experiments have shown that intraflower pollination in the thrum morph is negligible. Aging of pin flowers has a reducing effect on their total pollen loads, while in thrums there is no change in total pollen load after the first days of anthesis.     

论东南亚磨芋资源的利用历史、现状及开发潜力

论东南亚磨芋资源的利用历史、现状及开发潜力何家庆（安徽省磨芋技术研究中心合肥２３００３９）关键词东南亚,磨芋属,资源评价,综合开发潜力,磨芋产业化ＡＤＩＳＣＵＳＳＩＯＮＯＮＴＨＥＨＩＳＴＯＲＹＡＮＤＰＲＥＳＥＮＴＳＴＡＴＥＯＦＵＴＩＬＩＺＡＴＩＯＮＯ...     

Influence of plant morphology on root exudation of maize subjected to mechanical impedance in hydroponic conditions

Microbial ethylene (C2H4) consumption was studied as a method of reducing the ethylene concentration during ethylene exposure of Begonia elatior in transport simulation boxes. Potted plants were exposed to an air flow (ca. 164 L h-1) with 0–1.03 ppm ethylene for 4 days in the presence of horticultural peat-soil that was induced to microbial ethylene consumption or in the presence of ethylene-oxidizing bacteria added to the peat-soil in the Begonia pots (referred to as plant soil). Ethylene consumption during transport simulation was enhanced by both procedures. However, the maximal extent of the reduction in ethylene concentrations (11–50%) was too low to significantly improve the keeping quality of the Begonia, which are known to be sensitive to ethylene exposure. A distinct ethylene consumption was due to the presence of potted Begonia in the transport simulation boxes. Batch experiments with plant soil verified such a capacity of microbial ethylene consumption. In addition, plant soil with added ethylene-oxidizing bacteria proved to be highly efficient for ethylene removal even to levels below our 0.002 ppm detection limit. With an optimized scrubber system such ethylene removal could be of further interest as a novel method of ethylene removal during transport and storage of horticultural produce.