Double fertilization and seed formation of <em>Calycanthus chinensis</em>

HUANG Jian-qin; HE Xiao-chun; JIN Shui-hu; ZHU Xiang-dong; WU Zheng-huang

Volume 16 Issue 3

Mar. 2019

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Article Navigation > Journal of Zhejiang A&F University > 1999 > 16(3): 219-223

HUANG Jian-qin, HE Xiao-chun, JIN Shui-hu, ZHU Xiang-dong, WU Zheng-huang. Double fertilization and seed formation of Calycanthus chinensis[J]. Journal of Zhejiang A&F University, 1999, 16(3): 219-223.

Citation:

HUANG Jian-qin, HE Xiao-chun, JIN Shui-hu, ZHU Xiang-dong, WU Zheng-huang. Double fertilization and seed formation of Calycanthus chinensis[J]. Journal of Zhejiang A&F University, 1999, 16(3): 219-223.

Double fertilization and seed formation of Calycanthus chinensis

1.
Department of Resources and Environment, Zhejiang Forestry College , Lin’an 311300, China;
2.
Forest Enterprise of Zhuji City , Zhuji 311800, Zhejiang , China;
3.
Forest Enterprise of Cangnan County , Cangnan 325800 , Zhejiang , China

Funds:

浙江省自然科学基金资助项目(391017)

Received Date: 1998-12-18
Rev Recd Date: 1999-01-29
Publish Date: 1999-09-20

Abstract

Double fertilization and seed formation of Calycanthus chinensis Cheng et S .Y .Chang were observed .It was showed that pollen tube got to embryo sac from micropylar in 8 days after the pollination .Double fertilization occurred in 10 ～ 13 days .Primary endosperm nucleus took a short dormant undergo free nuclear division .In about 18 days , the one-lined endosperm became cellular , belonging to a nuclear type .And zygote began to divide after one week dormant , and embryogenesis merges in to an oragrad type .Heart-shaped embryo developed in 39 days , then two pieces of cotyledon grew in one direct to surround the endosperm .With development of embryo , nucellus and inner integument were consumed .Endosperm differed in shape :the cells of which connected to embryo was much smaller , higher cytoplasm and the cells in central part showed much larger , extended in vertical direct , the cells in chalazal also differed in shape .This structure showed passage by which nutrition absorbed by endosperm cells in chalazal was transported to embryo .There was a specific structure in endosperm development .We called it whole endosperm haustorium .
- Calycanthus chinensis,
- double fertilization,
- embryo,
- endosperm,
- seeds

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Double fertilization and seed formation of Calycanthus chinensis

1. Department of Resources and Environment, Zhejiang Forestry College , Lin’an 311300, China;

2. Forest Enterprise of Zhuji City , Zhuji 311800, Zhejiang , China;

3. Forest Enterprise of Cangnan County , Cangnan 325800 , Zhejiang , China

Funds:

浙江省自然科学基金资助项目(391017)

Received Date: 1998-12-18

Rev Recd Date: 1999-01-29

Publish Date: 1999-09-20

Key words:

Abstract: Double fertilization and seed formation of Calycanthus chinensis Cheng et S .Y .Chang were observed .It was showed that pollen tube got to embryo sac from micropylar in 8 days after the pollination .Double fertilization occurred in 10 ～ 13 days .Primary endosperm nucleus took a short dormant undergo free nuclear division .In about 18 days , the one-lined endosperm became cellular , belonging to a nuclear type .And zygote began to divide after one week dormant , and embryogenesis merges in to an oragrad type .Heart-shaped embryo developed in 39 days , then two pieces of cotyledon grew in one direct to surround the endosperm .With development of embryo , nucellus and inner integument were consumed .Endosperm differed in shape :the cells of which connected to embryo was much smaller , higher cytoplasm and the cells in central part showed much larger , extended in vertical direct , the cells in chalazal also differed in shape .This structure showed passage by which nutrition absorbed by endosperm cells in chalazal was transported to embryo .There was a specific structure in endosperm development .We called it whole endosperm haustorium .

Double fertilization and seed formation of Calycanthus chinensis

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References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views

Double fertilization and seed formation of Calycanthus chinensis

1. Department of Resources and Environment, Zhejiang Forestry College , Lin’an 311300, China;

2. Forest Enterprise of Zhuji City , Zhuji 311800, Zhejiang , China;

3. Forest Enterprise of Cangnan County , Cangnan 325800 , Zhejiang , China

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Double fertilization and seed formation of Calycanthus chinensis

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通讯作者: 陈斌, bchen63@163.com

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Double fertilization and seed formation of Calycanthus chinensis

1. Department of Resources and Environment, Zhejiang Forestry College , Lin’an 311300, China; 2. Forest Enterprise of Zhuji City , Zhuji 311800, Zhejiang , China; 3. Forest Enterprise of Cangnan County , Cangnan 325800 , Zhejiang , China

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1. Department of Resources and Environment, Zhejiang Forestry College , Lin’an 311300, China;

2. Forest Enterprise of Zhuji City , Zhuji 311800, Zhejiang , China;

3. Forest Enterprise of Cangnan County , Cangnan 325800 , Zhejiang , China