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Artificial hybridization breeding method for water chestnuts

A technology of artificial hybridization and hybrid seeds, applied in the directions of botanical equipment and methods, application, and plant genetic improvement, can solve the problems of single rhizoma variety, degeneration of seed, and poor predictability of breeding, and achieve strong growth potential. , strong stress resistance, obvious effect of hybrid vigor

Active Publication Date: 2017-02-22
INST OF VEGETABLE WUHAN ACADEMY OF AGRI SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These selected varieties are also obtained through purification and rejuvenation on the basis of local varieties, and the predictability of selection is not strong.
Therefore, the currently cultivated water chestnut has the disadvantages of single species and serious degradation of species.
On the other hand, although sexual hybridization, as the main breeding method of many crops, has been used to breed a large number of varieties, there is no report on the directional selection of water chestnut varieties through artificial crossing, and there is no artificial crossing technology.

Method used

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  • Artificial hybridization breeding method for water chestnuts
  • Artificial hybridization breeding method for water chestnuts
  • Artificial hybridization breeding method for water chestnuts

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 provides a kind of water chestnut artificial hybridization breeding method, comprises the following steps:

[0046] Parent materials: Jiayu Ling, native to Jiayu County, Hubei Province; Hanchuan Hongling, native to Hanchuan City, Hubei Province. All come from the National Germplasm Wuhan Aquatic Vegetable Resource Garden.

[0047] Seedling raising and planting of parents: Jiayu water chestnut was selected as the female parent, Hanchuan Hongling was used as the male parent, and seedlings were sown in the nursery field at the end of March, with a seed rate of 0.6kg / m 2 , maintain a water depth of 8 cm in the nursery field. After water chestnut seedlings emerge, gradually increase the water depth in the nursery field until the water depth is the same as that of the field planting field one week before transplanting. m, 3 water chestnut seedlings were planted in each hole, the male water chestnut grew male flower buds, and the female water chestnut grew female...

Embodiment 2

[0067] Embodiment 2 provides a kind of water chestnut hybrid seed, it obtains according to following water chestnut artificial cross breeding method:

[0068] Parent materials: Hanchuan Hongling, native to Hanchuan City, Hubei Province; Shui Hongling, native to Suzhou City, Jiangsu Province. All come from the National Germplasm Wuhan Aquatic Vegetable Resource Garden.

[0069] Seedling raising and planting of parents: Hanchuan Hongling was selected as the female parent, and Shui Hongling was used as the male parent, and seedlings were sown in the nursery field at the end of March, with a seed rate of 0.5kg / m 2 , keep the water depth of 5cm in the nursery field, after water chestnut seedlings come out, gradually deepen the water depth of the nursery field until the same water depth of 30cm as that of the field planting field one week before transplanting, planting 45 days after planting, sprinkle base fertilizer before planting, row spacing 1.5m, hole spacing 1.5 m, plant 2 wa...

Embodiment 3

[0077] Embodiment 3 provides a kind of water chestnut hybrid seed, it obtains according to following water chestnut artificial cross breeding method:

[0078] Parent materials: Nanhuling, native to Jiaxing City, Zhejiang Province; L Yeling-4, native to Wuchang County, Hubei Province. All come from the National Germplasm Wuhan Aquatic Vegetable Resource Garden.

[0079] Seedling raising and planting of parents: Nanhuling was selected as the female parent, L Yeling-4 was used as the male parent, and seedlings were sown in the nursery field at the end of March, with a seed rate of 0.7kg / m 2 , keep the water depth of 10cm in the nursery field, after water chestnut seedlings come out, gradually deepen the water depth of the nursery field, until the same water depth as the field planting field 40cm one week before transplanting, planting 45 days after planting, sprinkle base fertilizer before planting, row spacing 2.0m, hole spacing 2.0 m, 4 water chestnut seedlings were planted in...

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Abstract

The invention discloses an artificial hybridization breeding method for water chestnuts, and relates to the technical field of agricultural breeding. The artificial hybridization breeding method for the water chestnuts includes respectively selectively cultivating male parent water chestnuts and female parent water chestnuts; bagging male parent flower buds with just cracking sepals and petals yet to be loose, selecting female parent flower buds with just cracking sepals, removing the sepals and the petals, pinching off stamens and bagging the male parent flower buds and the female parent flower buds; pollinating female parent flowers by pollen of the male parent water chestnuts in 0-4 hours after the stamens of the female parent flower buds are removed. The male parent water chestnuts flower for 0-4.5 h before the female parent flowers are pollinated by the pollen of the male parent water chestnuts. The artificial hybridization breeding method has the advantage that hybrid water chestnut seeds with strong growth vigor and stress resistance and obvious hybrid vigor can be directionally selectively bred by the aid of artificial hybridization technologies.

Description

technical field [0001] The invention relates to the technical field of agricultural breeding, and in particular to a water chestnut artificial cross breeding method. Background technique [0002] Water chestnut originates from the warm regions of Europe and Asia. China is one of the original places of water chestnut. Water chestnut has been cultivated in China for more than 2,500 years. Rhizome is an annual floating water aquatic herb plant, which grows on the bottom of the water, and the mud roots in the water are thin wire-like. It blooms from May to October and bears fruit from July to November. The fruit of water chestnut, namely water chestnut, hangs in the water under the dense leaves, in the shape of a triangular rhombus, with light gray long hairs on the surface, no thorns at the waist corner, the fruit beak is not obvious, and there is 1 seed inside. The skin of water chestnut is crispy and the meat is delicious. It can be eaten after steaming and peeling off, or i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 李双梅柯卫东刘义满彭静黄新芳李峰刘玉平朱红莲钟兰孙亚林黄来春李明华王芸刘正卫周凯匡晶季群
Owner INST OF VEGETABLE WUHAN ACADEMY OF AGRI SCI & TECH