The inheritance analysis of leaf color and male sterility were made in F 2 and F 3 populations from two PGMS lines with the pale-green leaf marker (TS1, TS3) and four different restorer lines in japonica rice.
The flowering habits of photo-thermoperiod sensitive genic sterile rice lines with pale-green leaf markers TS1, TS2, TS3, TS4, and ZAU11S, PA64S, which were used as controls, were systematically surveyed.
2. F2 populations generated by the hybridization between pale-green leaf sterile lines and restore lines were used to study the inheritance of leaf color and male sterility. Of all the F2 populations, the segregation of leaf color was 13 (green): 3 (pale-green), implying the leaf color was controlled by two genes, and one gene inhibited the other.
Developed from the photoperiod thermo sensitive genic male sterile line M2S with pale green leaf marker, and an elite restorer T2, derived from hybridization of indica and japonica, is a new two line hybrid combination. It is characteristic of high and stable yield, good quality and pest resistance.
F 1 of indica type dual purpose genic male sterile (DGMS) rice was used to anther culture. Some DH lines with pale green leaf marker developed from anther derived lines obtained from M2S/Pei'ai 64S cross were selected into growth chambers to study the sterile expression and fertile transformation of their responses to photoperiod and temperature. The difference of their responses to photoperiod and temperature was large among DH lines.
利用花药培养技术对籼型两用核不育水稻的杂种 F1 进行花药培养 ,获得了大量的绿苗 ,从组合 M2 S /培矮 S中选育出一批带淡绿叶标记的籼型两用核不育 DH品系 ,选择部分 DH系进入人工气候箱鉴定其光温反应特性 ,结果表明DH系之间的光温反应特性差异较大。
A thermo-insensitive pale green leaf mutant(pgl2) was isolated from T-DNA inserted transgenic lines of rice(Oryza sativa L.subsp.japonica cv.Nipponbare).
The experimental results of controlling Oidium hevea with sulphur dust showed that the suitable time for the first dusting is at the stage when total disease index reach 1—3(bronze leaf) and 4—6(light green leaf).
By correlating these ptDNA inheritance patterns with the leaf colour (albino, pale-green, and green) of the hybrids, it is suggested that the Z.
Among pale-green tomato plants heterozygous for the xanthophyllic2 (xa-2) mutation that were transformed with a T-DNA harbouring the NPTII and GUS gene, a plant with a high frequency of green/white twin spots was found.
One of the morphological markers, pale-green leaf (pg) has not previously been mapped in Fragaria and was located to the mid-point of linkage group?VI.
On the basis of their carotenoid compositions, four groups of pale-green strains have been delineated.
flavum, the seedlings from immature ovule were albino or pale-green plants.
The young leaf is a fully expanded, but still pale green leaf.
The experimental results of controlling Oidium hevea with sulphur dust showed that the suitable time for the first dusting is at the stage when total disease index reach 1—3(bronze leaf) and 4—6(light green leaf). Sulphur particles through 3 2 0 mesh lead to the best effectiveness. The appropriate rate of application is 7.5—12.5kg/ha with an effective period of 1—2 weeks. None of the 35 fungicides assayed is better than sulphur in terms of cost and field performance. The experimental results showed that dusting...
The experimental results of controlling Oidium hevea with sulphur dust showed that the suitable time for the first dusting is at the stage when total disease index reach 1—3(bronze leaf) and 4—6(light green leaf). Sulphur particles through 3 2 0 mesh lead to the best effectiveness. The appropriate rate of application is 7.5—12.5kg/ha with an effective period of 1—2 weeks. None of the 35 fungicides assayed is better than sulphur in terms of cost and field performance. The experimental results showed that dusting from aircraft, with better coverage and higher efficiency, has the same controlling effect as dusting by ground machine.
Incorporating recessive marker gene controlling pale-green-leaf(pgl)into a photo-thermoperiod sensitive genic male sterile indica rice (PGMS) 8902S by backcrossing,a PGMS indica rice with pale-green-leaf marker(i.e.M2S)was developed.The fertility response of M2S to photoperiod and temperature is different from that of 8902S. In the natural condition of Hangzhou (30°25'N),M2S was characterized with high male sterility(more than 99.5 %)over 30 days in summer and normal fertility during middle fall.The further...
Incorporating recessive marker gene controlling pale-green-leaf(pgl)into a photo-thermoperiod sensitive genic male sterile indica rice (PGMS) 8902S by backcrossing,a PGMS indica rice with pale-green-leaf marker(i.e.M2S)was developed.The fertility response of M2S to photoperiod and temperature is different from that of 8902S. In the natural condition of Hangzhou (30°25'N),M2S was characterized with high male sterility(more than 99.5 %)over 30 days in summer and normal fertility during middle fall.The further analysis of M2S in phytotrons with 3 photoperiod(P)×3 temperature(T)treatments showed that M2S had absolute or high male sterility under long day (15. 0 h) with all temperature(30.1℃,24.1℃, 23.1℃)combinations and high temperature(30.1℃)with all photoperiod(15.0 h,14.0 h,12.5 h)combinations,but normal spikelet fertility under short day(12.5 h)favorite temperature (23.1￣24.1℃),and that the male sterility of M2S is controlled by P ×T interaction.This kind of stable male sterility in long day or/and high temperature,with combination of its palegreen-leaf marker for pseudo-hybrid detection at seedling stage,will make it advantageous to other existing indica PGMS in the hybrid seed production by two-line method when abnormal summer low temperature occurs.
A indica photoperiod-temperature sensitive genic male sterile line M2S with marker was crossed with a total of 21 varieties of 3 types of rice indica, japonica and intermediate type. It was found that in those F 1 s of M2S crossing with the majority indica and part japonica and intermediate-type, the days from sowing to heading were less than 90 days and the plant height was shorter than 120cm. The yield of major F 1 s of M2S crossed with japonica and intermediate-type was higher than check Shanyou 10....
A indica photoperiod-temperature sensitive genic male sterile line M2S with marker was crossed with a total of 21 varieties of 3 types of rice indica, japonica and intermediate type. It was found that in those F 1 s of M2S crossing with the majority indica and part japonica and intermediate-type, the days from sowing to heading were less than 90 days and the plant height was shorter than 120cm. The yield of major F 1 s of M2S crossed with japonica and intermediate-type was higher than check Shanyou 10. The heterosis displays mainly in number of grains per panicle, and then in number of panicles. There is certainly useful value of M2S in two-liner hybrid rice.
淡绿叶
pale-green
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