Interspecific hybridization breeding method for new zoysia plant variety

A new plant variety and hybrid breeding technology, applied in the field of interspecific hybrid breeding of Zoysia genus, can solve the problems of rough texture, short green period, low density and the like, and achieve the effects of ensuring purity and improving efficiency

Active Publication Date: 2015-03-25
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The Institute of Botany, Chinese Academy of Sciences, Jiangsu Province has extensively collected Zoysia germplasm resources from home and abroad since 1993. Up to now, 178 provenances of 6 species and 1 variety of Zoysia resources have been collected, and the external traits of these resources have been studied. , A series of comprehensive evaluations have been carried out in terms of turf value, morphological type, firmness, and stress resistance. The results of the study found that although Zoysia chinensis and Zoysia sinensis have strong cold resistance and fast-growing turf, they have relatively high texture. Roughness, low density and short green period; although Zoysia ditchleaf and Zoysia fineleaves are finer in texture and longer in green period, they have poor cold resistance, slow growth and easy pilling, etc. shortcoming

Method used

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  • Interspecific hybridization breeding method for new zoysia plant variety
  • Interspecific hybridization breeding method for new zoysia plant variety
  • Interspecific hybridization breeding method for new zoysia plant variety

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1: Crossbreeding of Zoysia (Z.japonica) and Zoysia tenuifolia (Z.tenuifolia)

[0016] Zoysia (Z.japonica) Z004 was used as the female parent and Z. tenuifolia (Z.tenuifolia) Z059 was used as the male parent for cross breeding (where Z004 and Z059 are the numbers of the parent materials, both planted in the Institute of Botany, Chinese Academy of Sciences, Jiangsu Province In the nursery ground), in mid-April 2000 when Zoysias Z004 booted, it was bagged with a sulfuric acid paper bag with a diameter of 1.5 cm and a length of 10 cm. After one week of bagging, the pistils were exposed, and the pollen of the male parent Z059 was collected in a small beaker, and then the female parent's inflorescence to be pollinated was inserted into the small beaker, and the reproductive branches were manually assisted to make the pistils fully dipped in pollen. bag. Three days after pollination, the top stamens began to be exposed, and the stamens were removed with tweezers be...

Embodiment 2

[0017] Embodiment 2: the cross breeding of Zoysia sinensis (Z.sinnica) and Zoysia ditch leaf (Z.matrella)

[0018] Zoysia chinensis (Z.sinnica) Z042 was used as the female parent and Zoysia chinensis (Z.matrella) Z014 was used as the male parent for cross breeding (Z042 and Z014 are the numbers of the parental materials, both of which were planted in the Botanical Research Institute of the Chinese Academy of Sciences in Jiangsu Province. Institute nursery ground), in mid-April 2000, when Zoysia sinensis Z042 booted, it was bagged with a sulfuric acid paper bag with a diameter of 1.5 cm and a length of 10 cm. After bagging for 1 week, the pistils were exposed, and the pollen of the male parent Z014 was collected in a small beaker, and then the inflorescence of the female parent to be pollinated was inserted into the small beaker, and the reproductive branches were manually assisted to make the pistils fully dipped in pollen. bag. The top stamens begin to be exposed the next da...

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Abstract

The invention discloses an interspecific hybridization breeding method for a new zoysia plant variety and belongs to the technical field of artificial interspecific hybridization breeding of zoysia plants. The method comprises the following steps: with Zoysia japonica and Z.sinica as female parents, and Z.matrella and Z.tenuifolia as male parents, performing artificial hybridization, thereby obtaining the new variety of zoysia plant interspecific hybridization with excellent characters of the parents. The flowering habit of the zoysia plants is fully utilized, namely, when stamens just appear, the anther is not loose, and the stamens are easily removed before the stamens just appear and the anther is loose, so that the purity of filial generations is guaranteed, and the breeding efficiency is improved. The established hybridization breeding system plays an important role in culturing the new zoysia plant variety and promoting the development of lawns in China.

Description

1. Technical field [0001] The invention belongs to the technical field of plant artificial cross breeding, and in particular relates to using Zoysia japonica and Zoysia sinica as female parents, and using Zoysia matrella and Zoysia tenuifolia) as the male parent Zoysia interspecies cross-breeding method. 2. Background technology [0002] Plants of the genus Zoysia (Zoysia Willd.) have excellent characteristics such as wide adaptability, strong resistance, low maintenance cost, wear resistance, trampling resistance and long life, and are recognized as excellent warm-season turfgrasses in the world. my country is the country with the most extensive distribution of zoysia resources and the largest reserves in the world. However, due to the late start of research on turfgrass in my country, few new varieties have been cultivated. [0003] With the rapid development of my country's turf industry and the large demand for Zoysia grass at home and abroad, some research departments ...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 郭海林刘建秀郭爱桂宗俊勤陈静波
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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