Fumio Matsuda*, Hisashi Miyagawa and Tamio Ueno Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kyoto 606-8502, Japan. Fax: +81-75-753-6123. E-mail: [email protected] * Author for correspondence and reprint requests Z. Naturforsch. 56c, 228-234 (2001); received October 23/November 27, 2000 ß-l,3-Glucooligosaccharide, (S^-yV-p-coumaroyloctop...

Starch the main storage carbohydrate in higher plants Ta& 1. Characterjstjcs of the SBE c-NA from p a t o and is composed of the two polysaccharides, amylopectin (approximately 75%) and amylose (approximately 25%). Amylopectin is a highly branched a-1,4 glucan containing a1,6 branch points, whereas amylose is composed of long, linear a-1,4 glucans, some of which have very few a-1,6 branch point...

In this study, we determined for the first time the complete genomic sequence of an Argentinian isolate of Potato leafroll virus (PLRV), the type species of the genus Polerovirus The isolate sequenced came from a Solanum tuberosum plant that had been naturally infected with the virus. Isolate PLRV-AR had a nucleotide sequence identity between 94.4 and 97.3% with several known PLRV isolates worl...

ten solanum tuberosum cultivars and accessions from 11 wild solanum species were evaluated for their tolerance to salt (200 mm nacl or 100 mm na2so4), drought (35% peg), cold (-4ºc) and heat (37ºc). evaluation was based on electrolyte leakage from de-tached leaves of in vitro plantlets. testing involved a rinsing treatment with three changes of distilled water to remove electrolytes from leaf a...

Solanum nigrum(Black Nightshade) is a medicinal plant member of the Solanaceae family of plants. This family comprises many genera, well known for their therapeutic properties. In addition to S. nigrum, this family includes fruits and vegetables such as potato (Solanum tuberosum), tomato, peppers, ornamental plants such as petunia, and other medicinal plants.The present work is focused on the p...

Bactericera cockerelli (Sulc) (Hemiptera: Triozidae) is a major pest of potato, (Solanum tuberosum L.), tomato (Solanum lycopersicum L.), and peppers (Capsicum spp.). The purpose of our research was to identify and determine the impact of natural enemies on B. cockerelli population dynamics. Through 2 yr of field studies (2009-2010) at four different sites and laboratory feeding tests, we ident...

A major bottleneck to introgressive hybridization is the lack of genome collinearity between the donor (alien) genome and the recipient crop genome. Structural differences between the homeologs may create unbalanced segregation of chromosomes or cause linkage drag. To assess large-scale collinearity between potato and two of its wild relatives (Solanum commersonii and Solanum chacoense), we use...

Secondary host plant colonization by aphids involves alate and apterous morphs to spread in the population at a large scale by flying or, at a finer one, by walking. Macrosiphum euphorbiae Thomas (Hemiptera: Aphididae) and Myzus persicae Sulzer (Hemiptera: Aphididae) are two polyphagous aphids that cause serious losses on many crops, particularly on potato, Solanum tuberosum L. (Solanales: Sola...

Experiments were undertaken with field-grown potato (Solanum tuberosum L.) plants to test the hypothesis that altering leaf:tuber water potential gradients within a plant subjected to low soil moisture will allow greater Ca accumulation in tubers and reverse Ca deficiency-related tuber necrosis. Antitranspirant formulations containing a wax emulsion and a spreader/sticker surfactant increased l...

Transformed roots of the susceptible potato Solanum tuberosum L. cv. Desiree were inoculated with second-stage juveniles (J2) of Globodera rostochiensis pathotype Rol. Adult males emerged after 3-4 weeks and matings with females occurred. After 8 weeks gentle pressure on the eggs of maturing females released the J2 which were viable. Because this technique enables the production of vigorously g...