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Morphologic and Cytogenetic Characterization of F1 from Interspecies Cross in Oat

燕麦种间杂种F1的形态学与细胞遗传学研究



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邓光兵等:根尖有丝分裂和花粉母细胞减数分裂中期Ⅰ染色体配对行为 图版Ⅰ
DENG Guang-Bing et al.: Configurations of chromosome at mitosis metaphase and chromosome
pairing at MⅠof PMCs in hybrid F1 PlateⅠ


1
cb a
3 2






5 6 4





7
cb a
9 8






10 11 12







图版说明
1~6:“0001×0 4”根尖有丝分裂和花粉母细胞减数分裂中期Ⅰ染色体配对行为。1:亲本和杂种F1穗部形态,其中 a:“0001”,b:“0001×0034”,c:“0034”;
2:根尖有丝分裂 2n=35。 5:PMC减数分裂MⅠ染色体构型。3: 2n=35=9Ⅰ+13Ⅱ(12Ⅱrod+1Ⅱring);4:2n=35= 11Ⅰ+12Ⅱ(4Ⅱrod+8Ⅱring);5:2n=35=13
Ⅰ+11Ⅱ(8Ⅱro
7:亲本和杂种F
Ⅱ(5Ⅱrod+5Ⅱ
1-6:Configura
hybrid F1,a: 00
hybrid F1;3: 2n
in hybrid F1(ind
of ‘0025×0027
11: Chromosom
Ⅰ+9Ⅱ(5Ⅱrod

03

d
1
r
t
0
=
i
.
e
++3Ⅱring
穗部形态
ing)+1Ⅲ
ions of c
1’,b: ‘0
35= 9Ⅰ
cate lagg
7: Spike
pairing
4Ⅱring)3~
)。


hr
0
+
in
o
at
+6:PMC减数分裂后期Ⅰ(示落后染色体)。7~8:“0025×0027”根尖有丝分裂和花粉母细胞减数分裂中期Ⅰ染色体配对行为。
a:“0025”,b:“0025×0027”,c:“0027”;8:根尖有丝分裂,2n=35;9:2n=35= 5Ⅰ+15Ⅱ(6Ⅱrod+9Ⅱring);10:2n=35=10Ⅰ+11
11:2n=35=14Ⅰ+9Ⅱ(5Ⅱrod+4Ⅱring)+1Ⅲ;12:PMC减数分裂后期Ⅰ(示落后染色体)。
Explanation of Plate
omosome at mitosis metaphase and chromosome pairing at M of PMCs in hybrid F1 of ‘0001×0034’. Spike of parents and
01×0034’,c: ‘0034’; 2: Configurations of chromosome at mit s metaphase 2n=35. 3-5: Chromosome pai g at MⅠof PMCs in
13Ⅱ(12Ⅱrod+1Ⅱring);4: 2n=35=11Ⅰ+12Ⅱ(4Ⅱrod+8Ⅱrin
g chromosome). 7-8: Configurations of chromosome at mito
f parents and hybrid F1:a: ‘0025’,b: 0025×0027’,c: ‘0027
MⅠof PMCs in hybrid F1. 9: 2n=35= 5Ⅰ+15Ⅱ(6Ⅱrod+9Ⅱr
1Ⅲ;12:At anaphaseⅠof PMCs in hybrid F1(indicate laggingⅠ
osig);5:2n=35=13Ⅰ+11Ⅱ(8Ⅱrod+3Ⅱring);6:
sis metaphase and chromosome pairing at MⅠ
’; 8: Configurations of chromosome at mitosis
ing);10: 2n=35= 10Ⅰ+11Ⅱ(5Ⅱrod+5Ⅱrin
chromosome). 1:
rinAt anaphaseⅠof PMCs
of PMCs in hybrid F1
metaphase 2n=35. 9-
g) +1Ⅲ;11:2n=35=14
1