Effect of gamma radiations on the crossability of wheat, triticale and rye and on meiosis, pollen grain germination and pollen tube growth.

Singh, Mahesh Kumar; Khanna, Veena

doi:10.1508/cytologia.53.123

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…The useful genetic material of rye can be incorporated into wheat via triticale (× Triticosecale Wittmack) by hybridizing triticale with wheat (Sethi 1988). The hybrids of hexaploid triticale × bread wheat are more successful as they produce viable F1 seeds, whereas their reciprocal counterparts are incompatible due to endosperm abortion leading to the recovery of non-viable seeds (Kovtun 1979;Sharma & Sethi 1983;Singh & Khanna 1988). However, the hybrids of primary hexaploid triticale and bread wheat are more desirable in the cytoplasmic background of bread wheat, which is generally superior to the counterpart durum wheat cytoplasm (contributed by hexaploid triticale) for agronomical traits (Plaha & Sethi 1989).…”

Section: Inwoducfionmentioning

confidence: 99%

Genotype and age effect on in vitro embryo rescue of bread wheat x hexaploid triticale hybrids

Kapila

Sethi

1993

Plant Cell Tiss Organ Cult

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The in vitro embryo rescue response of hybrid embryos of different ages and sizes of 16 bread wheat × hexaploid triticale crosses was studied. Response was dependent on the parental wheat genotype. However, the triticale genotype did not seem to affect the response of in vitro embryo rescue. Optimum age of the embryo for better recovery of complete plantlets coincided with onset of the drying of hybrid caryopses in the field. Embryo size was positively correlated with embryo germination and recovery of plantlets and negatively correlated with callus development. The best embryo germination (55.55%) and plantlet recovery (50%) were recorded in the hybrid 'HD 2380' wheat x 'JNIT 173' triticale.

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Section: Inwoducfionmentioning

confidence: 99%

Genotype and age effect on in vitro embryo rescue of bread wheat x hexaploid triticale hybrids

Kapila

Sethi

1993

Plant Cell Tiss Organ Cult

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“…Bridges are generally formed due to stickiness of the chromosomes at metaphase or breakage and reunion of chromosome (Amer and Ali 1974;Kaur and Grover 1885a;Ahmad and Yasmine 1992). Singh and Khanna (1988) considered that anaphase bridges may be formed due to unequal exchange or dicentric chromosomes. Single bridge occurred due to fusion of sister chromatid at a common breakage point (Jayabalan 1987).…”

Section: Discussionmentioning

confidence: 99%

Mitodepressive and chromotoxic impact of nicotinamide on root meristems of Cyamopsis tetragonoloba L.

Kumar

Shikha

2012

Chromosome Botany

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The present study was undertaken to study the effect of nicotinamide at different concentrations viz.0.5%, 1.0%, 1.5%, 2.0% on root meristems of Cyamopsis tetragonoloba L. Mitotic study reveals various types of chromosomal aberrations like scattering(C-metaphase), precocious, unorientations, laggard, stickiness, bridges etc. Among these scattering was most prominent followed by precocious movement at metaphase and stickiness at anaphase. The AMI is expressed in terms of RDR while the chromosomal abnormalities in terms of RAR. The RDR considerably became more negative and RAR was increased along with increasing doses of nicotinamide. Increase in the negative value of RDR was directly proportional to the severity of the mitotic inhibition. Thus it was found that along with increasing treatment doses of nicotinamide the total abnormality percent increased and the active mitotic index decreased which shows potential toxicity of nicotinamide at their higher doses in this plant.

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“…Benzer şekilde yapılan bazı çalışmalarda, uygulanan mutagen cinsine ve dozlarına bağlı olarak başak uzunluğunda artma [19,23] ve azalmalar gözlemlenmiştir [24]. [25,26]. Mayoz bölünme anormallikleri tohum tutmayı önemli seviyede azaltmaktadır.…”

Section: Başak Uzunluğuunclassified

Farklı Gama Radyasyon Dozu Uygulamalarının M2 Generasyonunda Bazı Tarımsal Özellikler Üzerine Mutagenik Etkilerinin Belirlenmesi

Karakoca¹,

Akgün

2020

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Özet: Bu çalışma, Tarm-92 iki sıralı arpa çeşidi tohumlarına uygulanan farklı dozlarda gama ışınının (200, 300, 400 ve 500 Gy) M2 bitkilerinde bazı tarımsal özellikler üzerine etkilerini belirlemek amacıyla yapılmıştır. Araştırma Isparta koşullarında 2016-2017 vejetasyon döneminde yürütülmüştür. Araştırmada kontrol (ışın uygulanmamış), 200, 200 A, 300, 300 A, 400, 400 A, 400 A (Ç.B.) 500 ve 500 A gray dozları olmak üzere toplam 10 parsel yer almıştır. Parsellere dekara 10 kg/da azot ve 6 kg/da fosfor (P2O5) hesabıyla gübre uygulanmıştır. Araştırmada gama ışınlarının bitki boyu, başak uzunluğu, başakta tane sayısı ve başakta tane ağırlığı üzerine etkileri incelenmiştir. Araştırma sonucunda; ortalama bitki boyu kontrolde 72.10 cm, M2 generasyonunda 55.19-70.22 cm; başak uzunluğu kontrolde 8.71 cm, M2 generasyonunda 7.43-9.13 cm; başakta tane sayısı kontrolde 23.49 adet, M2 generasyonunda 20.36-23.42 adet, başakta tane ağırlığı kontrolde 2.73 g iken M2 generasyonunda 1.25-2.46 g arasında değişim göstermiştir. İncelenen özelliklerden bitki boyu, başakta tane sayısı, başakta tane ağırlığında kontrol grubuna göre gama radyasyon uygulaması ile genel olarak azalma, başak uzunluğunda artış gözlemlenmiştir. Araştırma sonucunda; 300 ve 400 Gy uygulamalarında incelenen özellikler yönünden daha fazla varyasyonun meydana geldiği belirlenmiştir.

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Effect of gamma radiations on the crossability of wheat, triticale and rye and on meiosis, pollen grain germination and pollen tube growth.

Cited by 7 publications

References 7 publications

Genotype and age effect on in vitro embryo rescue of bread wheat x hexaploid triticale hybrids

Genotype and age effect on in vitro embryo rescue of bread wheat x hexaploid triticale hybrids

Mitodepressive and chromotoxic impact of nicotinamide on root meristems of Cyamopsis tetragonoloba L.

Farklı Gama Radyasyon Dozu Uygulamalarının M2 Generasyonunda Bazı Tarımsal Özellikler Üzerine Mutagenik Etkilerinin Belirlenmesi

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