CN102893854B

CN102893854B - Parent layout of field in sorghum sudanense hybrid seed production

Info

Publication number: CN102893854B
Application number: CN 201210373867
Authority: CN
Inventors: 林平; 詹秋文; 李杰勤; 汪伟
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2012-10-04
Filing date: 2012-10-04
Publication date: 2013-09-25
Anticipated expiration: 2032-10-04
Also published as: CN102893854A

Abstract

The invention discloses a parent layout of field in sorghum sudanense hybrid seed production, characterized by alternatively planting multi-row male parents and multi-row female parents in the field, simultaneously planting a male parent plant in the female parents at a regular interval of 2 cm, and planting male parents in the northern and southern ends of the field in sorghum sudanense hybrid seed production. According to the invention, ventilation and light transmission of the female parents can be improved, the propagation of pollen in the field is benefited, the maturing rate of the female parents can be raised, the grains are plump, and the yield of sorghum sudanense hybrid seed production is raised.

Description

A kind of parent's layout type of high red grass crossing seed farm

Technical field

A kind of parent's layout type of high red grass crossing seed farm relates to the crop planting technology, and specifically a kind of parents that in the red grass crossing production of hybrid seeds of high process the plant height differed greatly carry out the mode of rational field layout.

Background technology

Gao Dancao is that a kind of Chinese sorghum and Sudan grass carry out the formulated forage grass crossbreed of distant hybridization, is mainly used in rear cattle, sheep, rabbit, fish.Because its grass product output height, quality is good, and palatability is good, is adopted by many raisers.The female parent of Gao Dancao is the shorter Chinese sorghum of stem stalk, and male parent then is the Sudan grass of high stalk.The discrepancy in elevation of high red careless parents' plant height is that the field hybrid seeding of Gao Dancao has caused some difficulties.Parent with No. 3, Anhui grass is example, and the average plant height of its male parent Sa is 2.84m, and the plant height of maternal TX623 then has only 1.32m.According to the convention of the sorghum hybrid production of hybrid seeds, usually the row of male parent and female parent is than generally being one than several, for example 1:4,1:5,1:6 or 1:8 etc.If carry out the hybrid seeding of No. 3, Anhui grass according to such row than pattern, the tall and big plant of male parent can produce the strong effect of sheltering from heat or light to the female parent of parallel plantation, make maternal illumination deficiency, the photosynthesis that influence is maternal, make maternal grow thin and weak.After particularly going out fringe, male parent usually lodges, and plant is directly covered on the maternal plant, not only influences the ventilation and penetrating light of maternal colony, and is bigger to the influence of pollen transmission, can cause maternal ripening rate to descend, hollow kernels, and output reduces significantly.

Summary of the invention

The objective of the invention is by adjusting high red grass crossing production of hybrid seeds parent's field layout, improve the ventilation and penetrating light condition in field, overcome the single file male parent to the shortcoming of the maternal row of several row than pattern, be father and mother's normal growth originally, the pollination of blooming normally provides comparatively favourable field environment, improves output and the benefit of the high red grass crossing production of hybrid seeds.

The present invention is achieved in that

1. parent's layout type of a high red grass crossing seed farm comprises father and mother's row ratio, father and mother's distance between rows and hills originally originally, and father and mother's arrangement originally is characterized in that, this employing of father and mother number is greatly gone than adding male parent babysbreath layout.

2. this big number row of described father and mother is than being that the line number of male parent Sudan grass is that the capable line number than maternal Chinese sorghum of 6-10 is 20-40.Described male parent babysbreath layout is to plant a strain male parent again every the distance of 2m in the colony of female parent.Described father and mother originally are arranged as alternate alternately arrangement, and all plant male parent on the both sides, north and south in hybrid seeding field.Described this distance between rows and hills of father and mother: line-spacing is bigger in the male parent, and spacing in the rows is less; Line-spacing is less in maternal, and spacing in the rows is less; Line-spacing is bigger between father and mother's basis.

Beneficial effect of the present invention: essence of the present invention is on the one hand with father and mother's in-group respectively relative concentrated area plantation in field, and the male parent of multirow is combined, and in proportion the female parent of multirow also is planted in together simultaneously, forms this big number row ratio of father and mother.The male parent of some divergently in the colony of female parent on the other hand.The benefit of doing like this is that male parent concentrates plantation both can guarantee the pollen amount of field abundance relatively, can reduce the interference of sheltering from heat or light to female parent again; Disperse a part of male parent in maternal colony, can increase the supply of maternal interior pollen, female parent is not caused tangible influence again, be conducive to the raising of hybrid seeding output.

Embodiment

Example below in conjunction with No. three production of hybrid seeds of height red careless Anhui grass is further described the present invention: during field sowing per 8 row of male parent Sa of No. three, Anhui grass are merged and be planted in together, maternal TX623 then 32 row merging is planted in together, and this alternate replacing of field father and mother is arranged.Distance every 2m in the colony of female parent is planted a strain male parent.This distance between rows and hills of father and mother: line-spacing 50cm in the male parent, spacing in the rows 30cm; Line-spacing 30cm in maternal, spacing in the rows 30cm; Line-spacing 50cm between father and mother's basis.The equal production of hybrid seeds male parent of the south of seed farm and the North Sa.

The field comparative trial adopts the capable hybrid seeding field than field layout type of this 1:8 of father and mother to produce and has only 20.2kg, and adopts the per mu yield of this example layout type to reach 150.5kg.

Claims

1. the field layout of a high red grass crossing seed farm comprises father and mother's row ratio, father and mother's distance between rows and hills originally originally, and father and mother's arrangement originally is characterized in that, this employing of father and mother number is greatly gone than adding male parent babysbreath layout, and specific targets are as follows:

1. this big number row of described father and mother is than being that the line number of male parent Sudan grass is that the capable line number than maternal Chinese sorghum of 6-10 is that 20-40 is capable;

2. described male parent babysbreath layout is to plant a strain male parent again every the distance of 2m in the colony of female parent;

3. described father and mother originally are arranged as alternate alternately arrangement;

4. described father and mother originally are arranged as on the both sides, north and south in hybrid seeding field and plant male parent.