The Influence of Mutant Genes on Chiasmata Formation in &lt;i&gt;Pisum sativum&lt;/i&gt;

Gottschalk, W.; Villalobos‐Pietrini, Rafael

doi:10.1508/cytologia.30.88

Cited by 28 publications

(7 citation statements)

References 11 publications

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“…The F1 plants generally had a lower chiasma number, ranging from 1.08 to 1.83, with a variance of the same order as that of the parents. This difference in chiasma frequency might be due to some interaction between parental chromosomes or genes, as found by Rees (1961), Rees and Tompson (1956), Jones and Rees (1964), and Gottschalk and Pietrini (1965).…”

Section: Chromosome Pairing In F1 Plantsmentioning

confidence: 73%

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Chu

Morishima

Oka

1969

The Japanese journal of genetics

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The plant group dealt with in this paper comprises two cultivated species, Oryza sativa L, and 0. glaberrima Steud. and their respective wild relatives, 0. perennis Moench and 0. breviligulata Chev. et Roehr. On circumstantial evidence, sativa must have arisen from the Asian form of perennis (Oka and Chang 1962;Oka 1964a), and glaberrima from breviligulata independently of sativa (Morishima et al. 1963). 0. glaberrima and 0. breviligulata (Series Glaberrima) are endemic to West Africa, while 0. sativa and 0.

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Section: Chromosome Pairing In F1 Plantsmentioning

confidence: 73%

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Chu

Morishima

Oka

1969

The Japanese journal of genetics

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“…Reviewing earlier works, Riley and Law (1965) and Riley (1966) have concluded that the amount of chromosome pairing is regulated by an integ rated operation of polygenes, with considerable amount of non-allelic interaction, and major genes. More recently, Gottschalk and Baquar (1971) have identified 50 'genes of meiosis' in Pisum, 39 of which constitute a single genic system and control various steps of meiosis and gamete formation. Dominant state of these genes is indispensaible for normal functioning of chromosomes during meiosis.…”

Section: Discussionmentioning

confidence: 99%

Cytogenetical Studies in the Inbred Lines of Radish (<i>Raphanus sativus</i> L. var. <i>radicola</i> Pers.) and Their Hybrids

Dayal

1977

CYTOLOGIA

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“…Such type of cor relation between chiasma frequency and number of bivalents per cell has been re ported by several workers (Koller 1938, Soost 1951, Sjodin 1970. At Al, several types of abnormalities such as unequal separation, multipolar separation and lagging of chromosomes are often observed in asynaptic and desynaptic mutants (Sjodin 1970, Gottschalk and Baquar 1971, Srivastava 1974, Sahu et al 1981. Sjodin (1970) observed Al separations ranging from 6-6 to 11-1 in Vicia faba (2n=12).…”

Section: Discussionmentioning

confidence: 79%

“…Burnham (1962) and Soost (1951) suggested the use of asynaptic and desynaptic genes to produce aneuploids. From such mutants, aneuploids have been isolated in some crops (Gottschalk andMilutinovic 1973, Palmer andHeer 1976).…”

Section: Discussionmentioning

confidence: 99%

“…Various causes have been suggested for the occurrence of asynapsis and de synapsis, such as structural changes in chromosomes, failure of chromosome pairing in interspecific hybrids, and gene action (Beadle 1933, Beasley and Brown 1942, Prakken 1943, Li et al 1945, Celarier 1955, Gottschalk and Villalobos-Pietrini 1965, Jauhar and Singh 1969, Sharma and Reinbergs 1974, Sjodin 1970. Environ mental factors also influence chromosome pairing and chiasma formation (Li et al 1945, Soost 1951.…”

Section: Discussionmentioning

confidence: 99%

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Asynaptic and desynaptic mutants in barley.

Prasad¹,

Tripathi²

1986

CYTOLOGIA

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Both spontaneous and induced types of asynapsis and desynapsis have been reported in a number of plant species (Beadle 1933, Prakken 1943, Li et al. 1945, Soost 1951, Ross et al. 1960, Chao et al. 1960, Dyck and Rajhathy 1965, Riley and Law 1965, Chennaveeraiah and Krishnappa 1968, Jauhar and Singh 1969, Sjodin 1970, Sharma and Reinbergs 1974, Srivastava 1974, Palmer 1974, Sahu et al. 1981. In most of the cases they have been governed by genes. Some asynaptic and de synaptic mutants were isolated from DES treated populations of barley. The present paper describes the cytology and genetics of these mutants. Materials and methodsDuring study of chemical mutagenesis in barley (Hordeum vulgare L.) several partially sterile (PS) plants were isolated from M2 generation of the seeds of cultivar DL 36 treated with 0.3 per cent aqueous solution of diethyl sulphate (DES). Sporocytes were collected in 3:1 alcohol-acetic acid solution and preserved in 70 per cent ethanol. Slides were prepared in 2 per cent aceto-propiono-carmine. Meiotic study showed that one of the PS plants was asynaptic and three plants were desynaptic mutants. Next year (in M3) these mutants were crossed with the mother variety DL 36 reciprocally. Data on F2 segregation were recorded and x2-test was applied for inheritance of asynapsis and desynapsis. ResultsSterility and seed set Mutants were highly sterile. Table 1 shows that the asynaptic plant DM 11-10 produced 97.0 per cent sterile pollen grains. Number of seeds per spike in this mutant ranged from 0 to 4 and average seed set was 3.5 per cent. In desynaptic mutants DM 1-15, DM 6-6 and DM 16-7, pollen sterility was 90.5, 37.8 and 35.0 per cent, respectively. Average seed set was 6.5, 68.0 and 66.3 per cent in the re spective desynaptic mutants. CytologyProphase I: There was absence of chromosome pairing in asynaptic plant DM 11-10. All the PMCs of this plant showed invariably the presence of 14 uni valents at pachytene, diplotene and diakinesis (Figs. la,b). In the desynaptic plants,

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The Influence of Mutant Genes on Chiasmata Formation in <i>Pisum sativum</i>

Cited by 28 publications

References 11 publications

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Reproductive Barriers Distributed in Cultivated Rice Species and Their Wild Relatives

Cytogenetical Studies in the Inbred Lines of Radish (<i>Raphanus sativus</i> L. var. <i>radicola</i> Pers.) and Their Hybrids

Asynaptic and desynaptic mutants in barley.

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