Search Results - "Towill, L E"

Cryopreservation of shoot tips from in vitro plants of sweet potato [Ipomoea batatas (L.) lam.] by vitrification by PENNYCOOKE, J. C, TOWILL, L. E

“…Routine cryopreservation of shoot tips from sweet potato [Ipomoea batatas (L.) Lam] has been hampered by their survival variability after cryogenic exposure…”
Get full text

Cryopreservation of isolated mint shoot tips by vitrification by Towill, L.E

“…Shoot tips isolated from a mint clone, Mentha aquatica x M. spicata, were gradually exposed to a mixture containing 35% ethylene glycol, 1 M dimethylsulfoxide…”
Get full text

Cryopreservation of sweet potato (Ipomoea batatas [L] Lam.) shoot tips by vitrification by TOWILL, L. E, JARRET, R. L

“…Vitrification is a technically simple method for cryopreserving plant germplasm, requiring only the application of suitable cryoprotectants and rapid cooling…”
Get full text

Infrared spectroscopy of plant cell cultures. Noninvasive measurement of viability by Sowa, S. (USDA, ARS, Colorado State University, Fort Collins, CO), Towill, L.E

“…Infrared spectroscopy was used to examine suspension-cultured pear (Pyrus communis L.) and Spartina pectinata cells. Noninvasive measurements were made using…”
Get full text

Use of activated charcoal to enhance the germination of botanical seeds of potato by Bamberg, J. B., Hanneman, R. E., Towill, L. E.

Get full text

Improved survival after cryogenic exposure of shoot tips derived from in vitro plantlet cultures of potato by Towill, L E

“…In vitro plantlets were used for axillary shoot tip isolation to avoid microbial contamination which often occurred from use of greenhouse-grown plants…”
Get more information

Effects of nitrous oxide on mitochondrial and cell respiration and growth in Distichlis spicata suspension cultures by Sowa, S. (Colorado State Univ., Fort Collins, CO (USA). National Seed Storage Lab.), Towill, L.E

Get full text

Long-term survival of cryopreserved germplasm: contributing factors and assessments from thirty year old experiments by Walters, Ch, Volk, G.M, Stanwood, Ph.C, Towill, L.E, Koster, K.L, Forsline, Ph.L

“…Cryobiologists assume that the extreme low temperatures of liquid nitrogen stop chemical and physical reactions that lead to sample aging and loss of…”
Get full text

Medium alterations improve regrowth of sweet potato (Ipomoea batatas [L.] lam.) shoot tips cryopreserved by vitrification and encapsulation-dehydration by Pennycooke, J C, Towill, L E

“…In vitro grown sweet potato (Ipomoea batatas [L.] Lam.) shoot tips were successfully cryopreserved by both solution based and encapsulation-dehydration…”
Get more information

Seed set with potato pollen stored at low temperatures by Towill, Leigh E.

Get full text

Cryopreservation of Malus germplasm using a winter vegetative bud method: results from 1915 accessions by Towill, Leigh E, Forshline, Philip L, Walters, Christina, Waddell, John W, Laufmann, Julie

“…Cryopreservation using a winter vegetative bud method is being applied to the Malus collection maintained in the field at the USDA-ARS Plant Genetic Resources…”
Get more information

Osmotic shrinkage as a factor in freezing injury in plant tissue cultures [Haplopappus gracilis and Acer saccharum] by Towill, L E, Mazur, P

“…Haplopappus gracilis and Acer saccharum tissue culture cells are extremely sensitive to freezing injury, and exhibit a decrease in survival from 98% at -1 C to…”
Get full text

Cryopreservation of apple using non-desiccated sections from winter-collected scions by Towill, Leigh E, Bonnart, Remi

“…Winter vegetative buds of Malus species are cryopreserved at USDA-ARS NCGRP to backup genetic resources maintained by field collections. The method uses…”
Get more information

Cryopreservation of Salix species using sections from winter vegetative scions by Towill, Leigh E, Widrlechner, Mark

“…Twigs of Salix species are candidates for cryopreservation procedures because they become tolerant of freezing temperatures during mid-winter. We examined…”
Get more information

Recovery and longevity of cryopreserved dormant apple buds by Forsline, P.L, Towill, L.E, Waddell, J.W, Stushnoff, C, Lamboy, W.F, McFerson, J.R

“…Clonally propagated crops, unlike seed-propagated crops, require intense and costly maintenance, generally in ex situ field gene banks. Consequently, large…”
Get full text

136. Genebanking of vegetatively propagated crops: Cryopreservation of 44 Mentha accessions by Staats, Elise R., Towill, Leigh E., Laufmann, Julie, Reed, Barbara M., Ellis, David E.

Get full text

Colony formation and plant regeneration from mesophyll protoplasts of Solanum tuberosum by PELLOW, J. W, TOWILL, L. E

Get full text

Improved procedures for the isolation and culture of protoplasts fromSolanum etuberosum by Pellow, J. W., Towill, L. E.

Get full text

Pollen-handling protocol and hydration/dehydration characteristics of pollen for application to long-term storage by Connor, K.F. (Mississippi State Univ., Starkville, MS (USA). School of Forest Resources), Towill, L.E

Get full text

Infrared spectroscopy of plant cell culture. Noninvasive measurement of viability by Sowa, S, Towill, LE

“…Infrared spectroscopy was used to examine suspension-cultured pear (Pyrus communis L.) and Spartina pectinata cells. Noninvasive measurements were made using…”
Get full text