Camptotheca lowreyana tree named `Katie`

a lowreyana, camptotheca technology, applied in the field of new and distinct cultivars of camptotheca, can solve the problems of limited production of camptotheca trees, and achieve the effect of increasing the yield of camptothecin

Inactive Publication Date: 2001-06-26
STEPHEN F AUSTIN STATE UNIV
View PDF0 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

5. Plants of the new Camptotheca are more tolerant to low temperatures and drought than plants of Camptotheca lowreyana Li and Camptotheca acuminata Decaisne.
6. Plants of the new Camptotheca have a higher yield of camptothecin than plants of Camptotheca lowreyana Li and Camptotheca acuminata Decaisne.

Problems solved by technology

However, the production of Camptotheca trees is limited by low temperatures and drought.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

The aforementioned and following observations, measurements, values, and comparisons described plants grown in Nacogdoches, Tex., in one-gallon containers under outdoor conditions which closely approximate commercial production conditions. Plants used for the description were approximately one-year old.

In the following description, color references are made to The Royal Horticultural Society Colour Chart except where general terms of ordinary dictionary significance are used.

Botanical classification: Camptotheca lowreyana `Katie`.

Parentage:

Male parent.--Camptotheca lowreyana Li, not patented.

Female parent.--Camptotheca lowreyana Li, not patented.

Propagation:

Type.--By terminal cuttings.

Time to initiate roots.--Summer: About 7 days at temperatures of 32.degree. C. Winter: About 15 days at temperatures of 21.degree. C.

Time to develop roots.--Summer: About 21 days at temperatures of 32.degree. C. Winter: About 40 days at temperatures of 21.degree. C.

Rooting habit.--Fibrous.

Plant descrip...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A new and distinct cultivar of Camptotheca lowreyana tree named `Katie`, characterized by its freely and vigorously branching; dense and full plant habit; small leaf size; lanceolate to elliptic leaf shape; leaves from both juvenile and mature trees with entire leaf margins; lower temperature and drought tolerance; and high yield of anti-cancer camptothecin in leaves.

Description

BACKGROUND OF THE INVENTIONThe present invention relates to a new and distinct cultivar of Camptotheca, botanically known as Camptotheca lowreyana, and hereinafter referred to by the name `Katie`. The new Camptotheca is named in honor of Mrs. Katie Northrup of Houston, Tex.Camptotheca, also known as Xi Shu or Happytrees, are deciduous trees, native to China, and a member of the Nyssaceae family. Three species of Camptotheca are significant sources of naturally-occurring camptothecins, a very promising anti-cancer chemical substance (Li et al., in press). The anti-tumor activity of Camptotheca was first discovered in 1957 (Wall et al., 1966). Clinical trials of camptothecins in the United States, China, Japan and Europe have shown success in treating may types of cancer (Li and Adair, 1994). Some camptothecin drugs have received approval for cancer treatment in more the 20 countries. Recently, three semi-synthetic drugs from camptothecins (Hycamtin, Campto, and 9-Nitrocamptothecin) w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(United States)
IPC IPC(8): A01H6/00
CPCA01H5/00Y02A40/132A01H6/00
Inventor LI, SHIYOU
Owner STEPHEN F AUSTIN STATE UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap