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Transition from haploidy to diploidy
Nature, 1991As a direct consequence of sex, organisms undergo a haploid and a diploid stage during their life cycle. Although the relative duration of haploid and diploid phases varies greatly among taxa, the diploid phase is more conspicuous in all higher organisms.
V, Perrot, S, Richerd, M, Valéro
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1996
Plants having a single genome are known as haploids. Alternatively, haploid plants also are defined as those that have the gametic number of chromosomes. However, in the case of a polyploid species like alfalfa (Medicago sativa L.), a tetraploid with 2n = 4x = 32, haploid plants actually are true diploids with two homologous sets of chromosomes (2n ...
Daniel Z. Skinner, George H. Liang
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Plants having a single genome are known as haploids. Alternatively, haploid plants also are defined as those that have the gametic number of chromosomes. However, in the case of a polyploid species like alfalfa (Medicago sativa L.), a tetraploid with 2n = 4x = 32, haploid plants actually are true diploids with two homologous sets of chromosomes (2n ...
Daniel Z. Skinner, George H. Liang
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INDUCTION OF HAPLOIDY IN FRUIT TREES
Acta Horticulturae, 1990International ...
Zhang, Y.X. +2 more
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Near-haploidy in a case of plasmocytoma
Cancer Genetics and Cytogenetics, 1986Chromosome studies of a solitary plasmocytoma in the femoral bone revealed a near-haploid chromosome number of 31-32 with a loss of one homolog of each chromosome pair except #1, #7, #9, #15, #19-21, and the sex chromosomes (XY). The cytogenetic findings have been compared with 16 cases of near-haploid neoplasms from the literature studied using ...
U, Kristoffersson +4 more
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1997
Haploid plantlets can be produced through various means (Clapham, 1977). However, haploid production using anther or microspore culture is amenable to many dicotyledonous and monocotyledonous crop species. The doubled haploid breeding scheme has advantages in accelerating and simplifying procedures for production of homozygous plants.
George H. Liang +4 more
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Haploid plantlets can be produced through various means (Clapham, 1977). However, haploid production using anther or microspore culture is amenable to many dicotyledonous and monocotyledonous crop species. The doubled haploid breeding scheme has advantages in accelerating and simplifying procedures for production of homozygous plants.
George H. Liang +4 more
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1997
Rice (Oryza sativa L; 2n = 2x = 24) belongs to family Gramineae and the genus Oryza which includes 24 recognized species, of which 22 are primitive and the remaining two, O. sativa and O. glaberrima Steud., are cultivated. All the rice cultivars grown in Asia, Europe and America are O.
S. S. Gosal +7 more
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Rice (Oryza sativa L; 2n = 2x = 24) belongs to family Gramineae and the genus Oryza which includes 24 recognized species, of which 22 are primitive and the remaining two, O. sativa and O. glaberrima Steud., are cultivated. All the rice cultivars grown in Asia, Europe and America are O.
S. S. Gosal +7 more
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1984
The most effective medium to sustain pollen growth and development (Fig. 1) was Murashige and Skoog (1962) inorganic salt solution with a modified vitamin amino acid solution (meso-inositol 100mg/l; glycine 2mg/l; thiamine HCl 0.5 mg/1; nicotinic acid 5.0 mg/1; pyridoxine HCl 0.5 mg/1; folic aid 0.5 mg/1; biotin 0.05 mg/1).
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The most effective medium to sustain pollen growth and development (Fig. 1) was Murashige and Skoog (1962) inorganic salt solution with a modified vitamin amino acid solution (meso-inositol 100mg/l; glycine 2mg/l; thiamine HCl 0.5 mg/1; nicotinic acid 5.0 mg/1; pyridoxine HCl 0.5 mg/1; folic aid 0.5 mg/1; biotin 0.05 mg/1).
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1997
Triticale Triticosecale (Wittmack), often called the first man-made cereal, is a cross between wheat (Triticum) and rye (Secale cereale). Depending on the ploidy level triticales can be divided into three main groups: 1. Tetraploids: crosses between diploid wheat and rye; 2.
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Triticale Triticosecale (Wittmack), often called the first man-made cereal, is a cross between wheat (Triticum) and rye (Secale cereale). Depending on the ploidy level triticales can be divided into three main groups: 1. Tetraploids: crosses between diploid wheat and rye; 2.
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1997
The genus Petunia was first established in 1803 and since then, 30 Petunia species have been described, originated from South America (Sink, 1984). Because of inconsistency in taxonomic data of different Petunia species, the exact origin of the cultivated Petunia hybrida (Fig. 1) is still unknown. Van der Krol & Chua (1993) speculated that P.
S. Mohan Jain, N. Bhalla-Sarin
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The genus Petunia was first established in 1803 and since then, 30 Petunia species have been described, originated from South America (Sink, 1984). Because of inconsistency in taxonomic data of different Petunia species, the exact origin of the cultivated Petunia hybrida (Fig. 1) is still unknown. Van der Krol & Chua (1993) speculated that P.
S. Mohan Jain, N. Bhalla-Sarin
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1997
Citrus fruits are cultivated in more than 80 countries and rank first among fruit crops for worldwide production with about 73 millions tons harvested annually (FAO, 1994). Citrus fruits are an important source of human nutrition. Due to lower production costs, the cultivation of Citrus in developing countries has increased from 50 to 65% of total ...
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Citrus fruits are cultivated in more than 80 countries and rank first among fruit crops for worldwide production with about 73 millions tons harvested annually (FAO, 1994). Citrus fruits are an important source of human nutrition. Due to lower production costs, the cultivation of Citrus in developing countries has increased from 50 to 65% of total ...
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