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Remarks On The Genus Linanthus, Edgar T. Wherry

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Differential Chiasma Frequencies In Self-Pollinating And Cross-Pollinating Species Of The Genus Gilia, Howard S. Brown

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

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Staining Of Barley Kernels By Bacteria, Richard W. Lutey

Journal of the Minnesota Academy of Science

The demand for beer light in color has placed emphasis on the need to regulate malting as to produce, naturally and consistently, malts that are light in color (Bawden and Artis 1954), and malt having a clean pleasing aroma (Hopkins and Krause 1937). Even when bright barley, relatively free of field fungi, is malted, the finished product tends to be darker in color than the starting materials; in some cases to the extent that bleaching with sulfur dioxide gas is required (Hopkins and Krause 1937; Oesting et al. 1949). The cause of this discoloration is not known, but bacteria might …

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Light Reflectivity As An Index Of Chlorophyll Content And Production Potential Of Various Kinds Of Vegetation, J. R. Bray, J. E. Sanger

Journal of the Minnesota Academy of Science

As a part of the study, "Energy relations of terrestrial ecosystems," being carried on at Cedar Creek Natural History Area, and generously supported by the Hill Family Foundation, the University of Minnesota, and the National Research Council of Canada, an attempt was made in the summer of 1960 to discover the relationship between the chlorophyll content of various plant communities and the visible albedo, that is the ratio of the amount of light reflected from the landscape to the total amount falling upon it. ·

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Pollination Studies With Native Minnesota Pyrola And Moneses Species, Lawrence C.W. Jensen

Journal of the Minnesota Academy of Science

The closely related ericaceous ericaceous genera, Pyrola L. and Monese Salisb. ex. Gray, are common throughout the world in coniferous woods of north temperate areas. Characteristically they are small herbaceous plants with basal evergreen leaves and decorative inflorescences of green, white or pink flowers appearing in the early summer. In Minnesota there are five species of Pyrola-P. asarifolia Michx., P. elliptica Nutt., P. rotundifolia L., P. secunda L., and P. virens Schweigger. There is also the one species of Moneses, M. uniffora (L.) Gray. All these occur together in abundant quantities and bloom at approximately the same time. Consequently they …

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Microorganisms And Soil Structure, T. M. Mccalla, F. A. Haskins

Department of Agronomy and Horticulture: Faculty Publications

SUMMARY

Good stable soil structure is valuable for promoting the growth of plants and micro-organisms by permitting enhanced aeration and water penetration and by decreasing erosion under some conditions.

Micro-organisms influence water percolation through the soil. They may plug up soil pores with byproducts of growth and reduce water percolation. On the other hand, if a soil containing a large amount of microbial products is stirred and allowed to dry, then the percolation may be high.

Micro-organisms are involved in stabilizing soil structure by their products of decomposition and their cellular binding material, such as mycelia. Microorganisms differ greatly in …

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Revised And Annotated Catalogue Of The Grasses Of Arkansas, Dwight M. Moore

Journal of the Arkansas Academy of Science

No abstract provided.

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Pensternon In Your Garden, Glenn Viehmeyer

Department of Agronomy and Horticulture: Faculty Publications

A new race of hardy perennials is beginning to appear in American gardens. These are the penstemons, a genus of plants closely related to the familiar snapdragon, which may become important ornamentals as they become better known to gardeners. The purpose of this bulletin is to show the possibility of the genus as an ornamental and to suggest species and species hybrids of possible value to Great Plains gardeners; to provide information about propagation and culture; and to encourage gardeners to engage in penstemon breeding as an avocation.

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