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Structure and Fertilization of Embryo Sac in Intersubspecific Hybrids of Autotetraploid Rice

同源四倍体水稻亚种间杂种胚囊的结构及受精特点



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肖 波等:同源四倍体水稻亚种间杂种胚囊的结构及受精特点 图版Ⅰ
XIAO Bo et al.: Structure and Fertilization of Embryo Sac in Intersubspecific Hybrids
of Autotetraploid Rice PlateⅠ

A
P
S E
1 2

3 4


图版Ⅰ (除 1,2 外,材料均为广陆矮 4 号-4x×L202-4x) 图 1:
胞(S)、极核(P)和反足细胞团(A);图 2:二倍体正常结构的成熟
2.5 h,精核与极核融合为初生胚乳核(箭头);图 5:授粉后 3 h,初
现(箭头)。
PlateⅠ (The photographs taken by the hybrid of Guangluai No.4-4x×
Fig.1:The normal structure of mature embryo sac of intersubspecific hy
(S), polar nuclei(P) and antipodal (A);Fig.2:The normal structure of m
synergid degenerated (arrow);Fig.4:2.5 h after pollination, sperm and p
endosperm nucleus divided;Fig.6:1 d after pollination,endosperm
developed.
5
四倍体杂种正常结构的成熟胚囊(96025-4x×沈农 265-4x),示
胚囊(辽粳 944-2x);图 3:授粉后 0.5 h,助细胞退化(箭头)
生胚乳核分裂;图 6:授粉后 1 d,游离胚乳核分布在胚囊周围(
L202-4x except for Fig.1 and Fig.2.)
brids in tetraploid rice (96025-4x×Shennong 265-4x),showing the
ature embryo sac of diploid rice (Liaojing 944-2x);Fig.3:0.5 h afte
olar nuclei fused into primary endosperm(arrow). Fig.5:3 h after po
free nuclei (arrow head) located around the wall of embryo sac, p
1 6
卵细胞(E)、助细
;图 4:授粉后
箭头),原胚出
egg (E), synergid
r pollination, one
llination, primary
roembryo(arrow)

肖 波等:同源四倍体水稻亚种间杂种胚囊的结构及受精特点 图版Ⅱ
XIAO Bo et al.: Structure and Fertilization of Embryo Sac in Intersubspecific Hybrids
of Autotetraploid Rice PlateⅡ
87




图版Ⅱ 图 7:胚囊退化
(台中 65-4x×广陆矮
细川-4x);图 12:极核
PlateⅡ Fig.7:Embry
Fig.9:ES without egg-a
female germ-unit (arrow
Fig.12 The polar nuclei (

109
(箭)(沈农 265-4x×细川-4x);图 8:异常
4号-4x);图 10:无雌性生殖单位(箭头)(辽
位于胚囊壁处(箭头)(广陆矮 4号-4x×辽粳
o sac degeneration (arrow) (Shennong 265-4x×X
pparatus (arrow head), the polar nuclei (arrow) w
) (Liaojing944-4x×L202-4x);Fig.11:The po
arrow) located near the wall of embryo sac (Guan2
11
小胚囊(辽粳 944-4x×矮脚南特-4x);图 9:无卵器(箭头),极
粳 944-4x×L202-4x);图 11:极核位于反足细胞团处(箭头)
944-4x)。
ichuan-4x);Fig.8:Abnormal small embryo sac (Liaojing944-4x×
ere still in the embryo sac (Taichung65-4x×Guangluai No.4-4x);Fi
lar nuclei (arrow) located near the antipodal cells (Shennong265-4x
gluai No.4-4x×Liaojing 944-4x). 12
核仍在(箭头)
(沈农 265-4x×
Aijiaonante-4x);
g.10:ES without
×Xichuan-4x);

肖 波等:同源四倍体水稻亚种间杂种胚囊的结构及受精特点 图版Ⅲ
XIAO Bo et al.: Structure and Fertilization of Embryo Sac in Intersubspecific Hybrids
of Autotetraploid Rice PlateⅢ





13 14
15 16


图版Ⅲ (除 17外,材料均为广陆矮 4号-4x×L202-4x) 图 13:
头),但未能进一步发育;图 15:授粉后 1 d,精核进入极核,但未
照,×1 000);图 17:授粉后 7 d,胚发育(箭头),但极核未融合
Plate Ⅲ The photographs taken by the hybrid of Guangluai No.4-4x×
Fig.13:Embryo sac had normal structure but fertilization failed 1 d af
embryo and endosperm developed (arrow) 1 d after pollination;Fig.15:
Sperm nucleus did not fused with egg nucleus (arrow) (The image take
developed but the polar nuclei (arrow head) did not fuse (Shennong 15-4
after pollination. 3
17
授粉后 1 d,胚囊结构正常,但未能受精;图 14:授粉后 1 d,有
融合(箭头);图 16:授粉后 1 d,精核与卵核未融合(箭头)(
(箭头)(沈农 15-4x×勾镰早-4x);图 18:授粉后 7 d,胚乳发
L202-4x except for Fig.17.
ter pollination;Fig.14:The trace of pollen tube was found in the
Sperm nucleus did not fused with polar nuclei (arrow) 1 d after pol
n by semi-section of plastic,×1 000) 1 d after pollination;Fig.17
x×Goulianzao-4x) 7 d after pollination;Fig.18:Endosperm develo 18
花粉管痕迹(箭
塑料半薄切片图
育严重滞后。
embryo sac but no
lination;Fig.16:
:Embryo (arrow)
pment delayed 7 d