Index Catalog // ScholarsArchive@OSU

Allozyme genetics and mating systems of Cuphea Laminuligera and Cuphea lutea

Creator:: Krueger, Sharon K.
Abstract:: Cuphea laminuligera Koehne and Cuphea lutea Rose in Koehne are undomesticated species having potential as oilseed crops. Genetic markers and mating systems have not been described for these species. Our objectives were to survey these species for allozyme variation, analyze the segregation and linkage of polymorphic loci, estimate autofertility and...
Resource Type:: Dissertation

Temperature effects on postanthesis floral phenology and megagametophytic development in meadowfoam

Creator:: Franz, Robert E.
Abstract:: Meadowfoam (Limnanthes alba Benth.), an open-pollinated herbaceous winter annual, is adapted to Mediterranean climates and produces a seed oil with industrial uses. Seed yield in meadowfoam is partially determined by the number of seeds produced per flower. The flower is protandrous with the stigmata becoming receptive 1-3 days after anther...
Resource Type:: Masters Thesis

Stolon effects on growth and development of potato (Solanum tuberosum L.) nodal cuttings

Creator:: Thompson, Joyce Ann
Abstract:: Experiments were conducted to determine: (1) effects of pretransplant stolon formation on performance of potato transplants in the field and greenhouse; (2) effects of parent plant nodal position on productivity of rooted nodal cuttings; and (3) relationships between photoperiod and stolon formation. The effects of early stolon formation on Russet...
Resource Type:: Masters Thesis

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Creator:: Tanphiphat, Karin
Abstract:: Tuber oatgrass (Arrhenatherum elatius (L.) Presl. var. bulbosum (Willd.) Spenn.) is a perennial grass that often becomes a weed problem in Western Oregon. Control efforts using glyphosate often give unsatisfactory results. The effects of several factors on development of tuber oatgrass were investigated. Long days and cool temperatures (16/8h, 20/10C...
Resource Type:: Dissertation

The effect of date of planting, row spacing and seeding rate on seed yield and seed yield components of red clover (Trifolium pratense L.) in the Willamette Valley

Creator:: Echeverria, Eduardo M.
Resource Type:: Masters Thesis

Nitrogen timing and placement effects on grain and plant nitrogen, and grain yield in hard red winter wheat

Creator:: Bohle, Mylen G.
Abstract:: Hard red winter wheat has the potential to be an alternative crop in the Pacific Northwest, however percent grain nitrogen has been unacceptably low and grain yields have been about only 80% of soft white winter wheat. During the late spring and the summer months there is usually little rainfall,...
Resource Type:: Masters Thesis

Paclobutrazol and nutrient treatment effects on ovation perennial ryegrass

Creator:: Turner, J. Kevin
Abstract:: Rapid tiller and root production can improve seedling survival and benefit stand establishment of perennial ryegrass (Lolium perenne L.) in commercial seed fields. Environmental conditions after establishment and inherent morphological factors combine to reduce the commercially harvested yield below the theoretical potential yield. These studies were conducted to determine if...
Resource Type:: Dissertation

Evaluation of hill plots and near infrared reflectance techniques as breeding tools in spring malting barley

Creator:: Tragoonrung, Somvong
Abstract:: Hill plots and near infrared reflectance (NIR) spectroscopy were investigated as breeding tools to facilitate doubled haploid recurrent selection for malting quality characters in spring barley. Main objectives of this research were to i) compare hill and row plot expression of agronomic and malting quality traits in an array of...
Resource Type:: Masters Thesis

Possible association between grain protein content and yield as influenced by harvest index and biological yield in selected hard red winter wheat (Triticum aestivum L.) crosses

Creator:: Costa, José María
Abstract:: Grain yield and grain protein are often negatively associated in wheat. When yield increases and grain protein decreases, there can be an adverse effect on the milling and baking quality if the desired end product is bread flour. It has been suggested that this inverse association is the result of...
Resource Type:: Masters Thesis

Use of combining ability estimates to identify the genetic potential of selected winter parental lines (Triticum aestivum L.em Thell)

Creator:: Masood, Muhammad Shahid
Abstract:: A major factor limiting the efficiency of plant improvement programs is the lack of knowledge as to which parental combinations to make when working with quantitatively inherited traits. The primary objective of this study was to provide information regarding the use of combining ability analysis to predict which cross combinations...
Resource Type:: Dissertation

ScholarsArchive@OSU

Allozyme genetics and mating systems of Cuphea Laminuligera and Cuphea lutea

Temperature effects on postanthesis floral phenology and megagametophytic development in meadowfoam

Stolon effects on growth and development of potato (Solanum tuberosum L.) nodal cuttings

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

The effect of date of planting, row spacing and seeding rate on seed yield and seed yield components of red clover (Trifolium pratense L.) in the Willamette Valley

Nitrogen timing and placement effects on grain and plant nitrogen, and grain yield in hard red winter wheat

Paclobutrazol and nutrient treatment effects on ovation perennial ryegrass

Evaluation of hill plots and near infrared reflectance techniques as breeding tools in spring malting barley

Possible association between grain protein content and yield as influenced by harvest index and biological yield in selected hard red winter wheat (Triticum aestivum L.) crosses

Use of combining ability estimates to identify the genetic potential of selected winter parental lines (Triticum aestivum L.em Thell)

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