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Taro sexual reproduction breeding method

A sexual reproduction and seed technology, applied in horticultural methods, botanical equipment and methods, seed and rhizome treatment, etc., can solve the problems of many diseases and insect pests, low probability of good variation, single variety, etc., and achieve obvious hybrid advantage, taro The effect of high yield and strong disease resistance

Inactive Publication Date: 2013-05-01
WUHAN VEGETABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taro cannot be used for sexual cross-breeding, and the varieties promoted are relatively single, with many diseases and insect pests, and the species degradation is serious
[0004] In addition, in the past, the breeding methods of new taro varieties were mainly selective breeding and radiation breeding. The disadvantage is that the probability of producing good mutations is low, which is extremely unfavorable from the perspective of species evolution and adaptation to the environment; Bad traits cannot be removed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Colonization: use Lipu taro as the parent, and use wide and narrow rows for double-row ridge cultivation. First, ditch with a small row spacing of 30-40 cm wide and 10-15 cm deep. Small row spacing, 30-40 cm plant spacing is plum-shaped. Insert the taro vertically in the ditch, plant 2 rows in each ditch, and spread the base fertilizer, and then plow and cultivate the soil in the middle of the large row spacing on both sides to form a ridge. The depth of the covering soil is self-planted. The thickness from the top to the surface of the ridge is about 10 cm, and the width of the ridge is 40 cm. Then the surface of the ridge is thinned, covered with film and compacted;

[0027] 2) Flowering induction: In the first ten days of June, the taro leaves were sprayed with chemicals, the ingredients of which included 250 mg / L gibberellin and 0.5% Tween 20, and sprayed again every 3 days, a total of 2 times;

[0028] 3) Pollination: Pollination is carried out in the morning on...

Embodiment 2

[0045] 1) Colonization: choose Fuding taro as the parent, and use wide and narrow rows for double-row ridge cultivation. First, ditch with a small row spacing of 30-40 cm wide and 10-15 cm deep. After pouring the bottom water, press 25-30 cm Small row spacing, 30-40 cm plant spacing is plum-shaped. Insert the taro vertically in the ditch, plant 2 rows in each ditch, and spread the base fertilizer, and then plow and cultivate the soil in the middle of the large row spacing on both sides to form a ridge. The depth of the covering soil is self-planted. The thickness from the top to the surface of the ridge is about 10 cm, and the width of the ridge is 40 cm. Then the surface of the ridge is thinned, covered with film and compacted;

[0046] 2) Flowering induction: In the first ten days of June, the taro leaves were sprayed with chemicals, the ingredients of which included 200 mg / L gibberellin and 0.9% Tween 20, and sprayed again every 3 days, a total of 2 times;

[0047] 3) Polli...

Embodiment 3

[0064] 1) Colonization: Guangdong betel nut taro is selected as the parent, and the wide and narrow rows are used for double-row ridge cultivation. First, the small row spacing is 30-40 cm wide and the depth is about 10-15 cm. Small row spacing, 30-40 cm plant spacing is plum-shaped. Insert the taro vertically in the ditch, plant 2 rows in each ditch, and spread the base fertilizer, and then plow and cultivate the soil in the middle of the large row spacing on both sides to form a ridge. The depth of the covering soil is self-planted. The thickness from the top to the surface of the ridge is about 10 cm, and the width of the ridge is 40 cm. Then the surface of the ridge is thinned, covered with film and compacted;

[0065] 2) Flowering induction: In the first ten days of June, the taro leaves were sprayed with chemicals, the ingredients of which included 300 mg / L gibberellin and 0.5% Tween 20, and sprayed again every 3 days, a total of 2 times;

[0066] 3) Pollination: Pollina...

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PUM

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Abstract

The invention discloses a taro sexual reproduction breeding method which comprises the following steps of: 1, taro seed permanent planting; 2, flowering induction, namely performing flowering induction by spraying a chemical on taro leaves, wherein the composition of the chemical comprise 200-500mg / L gibberellin; 3, pollination; 4, seed collection; 5, seedling raising, namely configuring cover soil, then performing disinfection treatment on the cover soil, sprouting selected seeds, performing seedling hardening, transplanting and performing seedling-stage management; 6, breeding, namely primarily selecting excellent individual plants with vigorous growth potential and less diseases, marking and numbering for observation, reselecting according to observation record information and comprehensive analysis results, performing primary reproduction and strain comparative test on the selected individual plants, and breeding the excellent individual plants selected through the strain comparative test and local adaptability experimental planting, so as to obtain the excellent taro seedlings. According to the method disclosed by the invention, exogenous hormone is utilized to induce the taro variety to flower, and a sexual reproduction technology is utilized to breed a new taro variety, so that conditions are provided for researching taro genetic regularity and breeding excellent new varieties through hybridism.

Description

technical field [0001] The invention belongs to the field of agricultural breeding, and specifically refers to a method for sexual reproduction and breeding of taro. Background technique [0002] Taro [Colocasia esculenta (L.) Schott], also known as taro and taro, is a plant of the Araceae family. It is native to my country and tropical swamp areas such as India and Malaysia, and is widely cultivated in the world. Taro is a crop that mainly reproduces asexually. It rarely blooms under natural conditions. Whether it can bear fruit after flowering is closely related to its chromosomal ploidy. Diploids can produce normal gametes, and in theory they can self-fertilize or hybridize to produce fruit. Triploids cannot produce normal gametes, so they cannot bear fruit. The research on the taro chromosomes shows that: the taro taro is diploid (2n=2x=28), and the taro taro with multiple sons and taros are all triploid (2n=3x=42). [0003] At present, the main cultivated taro varieti...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01C1/00A01G7/06
Inventor 孙亚林黄新芳柯卫东刘义满李峰刘玉平彭静黄来春朱红莲董红霞李双梅
Owner WUHAN VEGETABLE RES INST
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