Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for quantitatively screening low-cadmium and high-yield rice varieties

A rice and variety technology, applied to high-yield rice varieties, quantitative screening of low cadmium fields, can solve the problems of inability to quantify scores, many parameters, confusion, etc., and achieve the effect of simple operation and strong operability

Pending Publication Date: 2021-11-02
ZHEJIANG UNIV +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when selecting rice varieties, most of them stay in specific experimental environmental conditions, which are very different from field conditions, and cannot objectively evaluate the conditions of rice varieties after they are planted in the field.
Although some screening methods reflect the genotype differences of cadmium accumulation in rice varieties to a certain extent, they have many parameters and are relatively chaotic. The screening results often only focus on the characteristics of low cadmium accumulation and ignore the yield.
Other screening methods are qualitative screening methods, which do not quantify scores, and are subject to large errors due to experiments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for quantitatively screening low-cadmium and high-yield rice varieties
  • Method for quantitatively screening low-cadmium and high-yield rice varieties
  • Method for quantitatively screening low-cadmium and high-yield rice varieties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Each mature rice varieties, ground rice samples taken one square meter, measured dry rice cadmium, rice production, cadmium straw, straw yield. The translocation factor = rice cadmium / straw cadmium content, calculated transport coefficients of rice varieties; = Accumulation The straw Straw Straw yield × cadmium content, calculated accumulated amount of each straw rice varieties. The results are shown in Table 1.

[0036] Table 1 is the average of the indexes rice varieties

[0037]

[0038]

[0039] Rice imparting cadmium content of 35% weight according FC L0 / FC i × 0.35 × 100 to obtain the weight value of each cadmium rice rice varieties. FC L0 Rice represents the lowest value cadmium rice; the FC i I represents cadmium in rice rice varieties.

[0040] Yield 30% of rice given weights according to Y i / Y H0 × 0.3 × 100 to obtain the weight value of each rice varieties of rice production. Y i I represents rice production of rice varieties; Y stands H0 It represents ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of crop variety screening methods, in particular to a method for quantitatively screening low-cadmium and high-yield rice varieties. The screening method comprises the following steps: (1) adding the weight value of the rice cadmium content, the weight value of the rice yield, the weight value of the transfer coefficient and the weight value of the straw accumulation amount to obtain the comprehensive score of the corresponding rice variety; and (2) screening rice varieties according to the comprehensive score. By adopting the screening method disclosed by the invention, the high-yield and low-cadmium rice variety suitable for being planted in the field can be quantitatively screened.

Description

Technical field [0001] TECHNICAL FIELD The present invention relates to the screening of crop varieties, in particular, it relates to a quantitative method of screening low cadmium, high-yielding rice varieties. Background technique [0002] Heavy metal cadmium pollution would not only lead to decline in rice production, but also endanger human health. Ueno et al studied 146 selected from among rice varieties from all over the world of heavy metal Cd accumulation of species differences, the highest and lowest Cd content in rice seed varieties differ by 13 times. Seen, different cadmium content in grain rice varieties different. So screened low cadmium, high-yielding rice varieties is mild cadmium pollution of farmland "of Production repair" an important measure of governance is the key to guarantee lightly contaminated soil in agricultural production safety. [0003] Currently, screening rice varieties, most of them stay in the specific test environment conditions, such environme...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q10/06395G06Q50/02
Inventor 杨肖娥陈志琴林强刘奇珍金海洋黄璐璐
Owner ZHEJIANG UNIV