Abstract
Abstract. Pollination is a key link in hybrid rice seed production. The pollination efficiency can be significantly improved through the method of pneumatic pollination under large-scale planting mode. In order to explore the effect of air velocity on pollen distribution in the process of pollination of hybrid rice and its better parameters，The self-made pneumatic pollination test platform was used to carry out field experiments and collect pollen. Based on the pollen distribution of single pollination, the objective functions of pollen quantity, variation rate and air velocity of each paternal plant row were established by response surface method. The multi-objective optimization of airflow velocity is carried out by genetic algorithm. The results showed that when the airflow acted on the paternal plant in single row, the propagation distance of pollen was short and the pollen accumulated near at low air flow velocity. The moderate increase of airflow velocity can promote the growth of pollen and reduce the variation rate. Due to the blocking effect of lateral paternal plants, the transmission of medial pollen is seriously limited. The pollen distribution under different airflow velocity combinations was obtained. When the airflow velocity range of the paternal plants in the first, second and third rows near maternal plants was 22.4-24m/s, 23.1-27m/s and 23.5-24.1m/s, respectively, pollination was sufficient and uniform. This study can provide a reference for the theory of pneumatic pollination and the optimization of working parameters under large-scale planting mode.
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Claims 8
Claim · model-written summary
Pneumatic pollination significantly improved pollination efficiency in large scale planting.
- Taxon
- hybrid rice
Oryza sativat0 - Outcome
- pollination efficiencye0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pollination efficiency can be significantly improved through the method of pneumatic pollination under large-scale planting mode.”
t0“hybrid rice”
Claim · model-written summary
Low airflow in a single paternal row left pollen propagation short and pollen accumulated nearby.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- low air flow velocitye0
- Outcome
- propagation distance of pollene0
- Direction
- shorte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the airflow acted on the paternal plant in single row, the propagation distance of pollen was short and the pollen accumulated near at low air flow velocity.”
t0“hybrid rice”
Claim · model-written summary
Moderately increased airflow promoted pollen growth.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- moderate increase of airflow velocitye0
- Outcome
- growth of pollene0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The moderate increase of airflow velocity can promote the growth of pollen and reduce the variation rate.”
t0“hybrid rice”
Claim · model-written summary
Moderately increased airflow reduced variation rate.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- moderate increase of airflow velocitye0
- Outcome
- variation ratee0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The moderate increase of airflow velocity can promote the growth of pollen and reduce the variation rate.”
t0“hybrid rice”
Claim · model-written summary
Lateral paternal plants seriously limited medial pollen transmission.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- transmission of medial pollene0
- Direction
- limitede0
- Qualifier
- blocking effect of lateral paternal plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Due to the blocking effect of lateral paternal plants, the transmission of medial pollen is seriously limited.”
t0“hybrid rice”
Claim · model-written summary
A first paternal row velocity of 22.4-24m/s gave sufficient, uniform pollination.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- firste0
- Outcome
- pollination was sufficient and uniforme0
- Value
- 22.4-24m/se0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the airflow velocity range of the paternal plants in the first, second and third rows near maternal plants was 22.4-24m/s, 23.1-27m/s and 23.5-24.1m/s, respectively, pollination was sufficient and uniform.”
t0“hybrid rice”
Claim · model-written summary
A second paternal row velocity of 23.1-27m/s gave sufficient, uniform pollination.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- seconde0
- Outcome
- pollination was sufficient and uniforme0
- Value
- 23.1-27m/se0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the airflow velocity range of the paternal plants in the first, second and third rows near maternal plants was 22.4-24m/s, 23.1-27m/s and 23.5-24.1m/s, respectively, pollination was sufficient and uniform.”
t0“hybrid rice”
Claim · model-written summary
A third paternal row velocity of 23.5-24.1m/s gave sufficient, uniform pollination.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- thirde0
- Outcome
- pollination was sufficient and uniforme0
- Value
- 23.5-24.1m/se0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the airflow velocity range of the paternal plants in the first, second and third rows near maternal plants was 22.4-24m/s, 23.1-27m/s and 23.5-24.1m/s, respectively, pollination was sufficient and uniform.”
t0“hybrid rice”