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Single pistillate castor vegetative propagation method

A technology of asexual reproduction and sexual reproduction, applied in horticultural methods, botanical equipment and methods, plant cells, etc., can solve problems such as restricting the process of castor female line selection

Inactive Publication Date: 2008-08-13
黄家祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the frost comes, it dies, which seriously restricts the breeding process of castor bean female lines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Capsule-free castor-oil plant single female material C89-3, thorn-type single female material C02-6, C9041A are three excellent materials that are particularly difficult to induce male flowers. They were transplanted in a warm winter greenhouse in October last year. Pruning branches on April 23, immersing the cuttings in the lower part of the castor cuttings with 20% a naphthalene acetic acid powder 2000 times solution for 2 hours, keeping the cuttings at 20-28℃, humidity 70-80%, and incubating under conditions of moist astigmatism. Rooting begins after 10-15 days. C9041A takes root as fast as 10 days. The slowest rooting of C02-6 is 15 days. After 30 days of cutting, there were 11 root systems with the least, 45 roots with the maximum root length of 25cm. Pruning was carried out on May 22 of the following year, leaving only 1 robust shoot at the base, cutting off all the rest, stopping spraying water and increasing light for 5 days to refine the seedlings, and transplant t...

Embodiment 2

[0020] A large spike-type single female castor material was discovered last year. The female flowers were picked 8 times by hand, and every 3 days lasted 25 days. A total of 1003 female flowers were picked for one inflorescence (generally no more than 300 female castor flowers). The male flowers have not yet been induced. It is no longer possible to induce male flowers to self-bred during the year as the temperature drops. Cut the hard branches on September 2 of the following year. The cut hard branches with three leaves are soaked in 20% naphthalene acetic acid for 2 hours, and the cuttings are placed in a nursery bed of fine sand or fine soil. 10-15cm; keep the cuttings at 20-28℃, humidity 70-80%, and cultivate under moist and astigmatism conditions. On September 25th, the average rooting is more than 20, and the seedlings will be pruned on September 26th and transplanted on October 6th. It is planted in a greenhouse for overwintering, and the excellent single female germplasm m...

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Abstract

The invention provides a haplometrotic ricin asexual propagation method belonging to the crop heterosis utilization field. The invention is characterized in that: A. transplant and preserve the whole plant of single female ricin material which can not be sexually reproduced into the sunlight greenhouse before frost; B. cut hard branches with three leaves when the temperature is up to 20 DEG C in the next spring, dip the lower part of the ricin cutting into 2000 times solution of 20% a-NAA powder in 2 hours; C. root the hard branch of ricin in nursery bed containing fine sand or fine soil, the depth is 10-15cm; D. cultivate the cutting at 20-28 DEG C, under 70-80% humidity, with the moist substrate and scattered light; E. train the branches 5-10 days before being planted into field, increase the light and ventilation time. The invention not only has the merits of retaining precious ricin single female breeding material, but also breeding lots of single female ricin material many times using branches of single plant.

Description

Technical field [0001] The invention relates to a method for single female castor asexual reproduction, castor hybrid parent female line selection and asexual expansion, and belongs to the field of utilization of agricultural heterogeneity. Background technique [0002] The heterosis of castor-oil plant is very obvious. Hybrids generally increase the yield by 20-30% compared with conventional ones. The advantageous combination increases production by more than 100%. The key to breeding castor hybrids is to first breed castor female lines. Castor oil plant belongs to the Euphorbiaceae family. The male and female flowers are coaxially different. The female flowers grow in clusters on the upper part of the raceme, and the male flowers are born on the lower part of the flower axis. The single female castor inflorescence only bears female flowers, not male flowers. The incidence of unisexual female castor is very small under natural conditions. Only by selfing breeding materials for m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H4/00C12N5/04A01G1/00A01G7/06
Inventor 黄家祥黄庆科黄秀珍黄秀芹
Owner 黄家祥
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