Distant Hybridisation and Doubled-Haploidy Breeding

Chaudhary, H. K.; Kaila, Vineeta; Rather, S. A.; Tayeng, Tisu

doi:10.1007/978-1-4614-8585-8_6

Cited by 5 publications

(7 citation statements)

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“…Дикорастущий вид Императа цилиндрическая (Imperata cylindrica (L.) Raeusch.) с успехом используется для массового получения полигаплоидов пшеницы и тритикале (Pratap et al, 2005;Kishore et al, 2011;Rather, 2012;Tayeng et al, 2012;Chaudhary et al, 2013Chaudhary et al, , 2014Chaudhary et al, , 2016. Использование этого вида в качестве опылителя имеет ряд преимуществ по сравнению с кукурузой -длительность цветения, отсутствие необходимости ежегодного посева опылителя, нечувствительность к действию генов-ингибиторов скрещиваемости пшеницы (Kishore et al, 2011).…”

Section: получение гаплоидов пшеницыunclassified

“…Для искусственного получения гаплоидов у злаков применяются два метода: культура пыльников и ее разновидность -культура изолированных микроспор и отдаленная гибридизация с последующей селективной элиминацией хромосом вида-опылителя (Chistyakova, 2000;Dyatchouk, 2003;Devaux, Pickering, 2005;Pratap et al, 2006;Ignatova;2011;Hazarica et al, 2013;Gosal, Wani, 2018;Srivastava, Singh, 2018). Одним из основных преимуществ метода селективной элиминации хромосом в сравнении с культурой пыльников у злаков является отсутствие альбиносных растений и генетическая стабильность DH-линий (Devaux, Pickering, 2005;Chaudhary et al, 2014).…”

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“…Хромосомы одного из родителей, чаще всего отцовские, частично или полностью элиминируют из гибридного ядра. Этот феномен, названный «хромосомной элиминацией», проявляется в различных межвидовых и межродовых скрещиваниях (Davies, 1974;Surikov, Dunaeva, 1989;Dyatchouk, 2003;Ignatova, 2011;Pratap et al, 2006;Chaudhary et al, 2014). В результате в развивающемся зародыше остается только гаплоидный набор хромосом материнского родителя.…”

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“…Элиминация хромосом является выражением одной из форм постгамной несовместимости, обеспечивающей репродуктивную изоляцию видов (Surikov, Dunaeva,1989). По мнению Х. К. Чаудхари с соавторами (Chaudhary et al, 2014), клеточные механизмы, вовлекаемые в процесс однородительской элиминации хромосом, до настоящего времени остаются плохо понятными.…”

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Distant hybridization as a method of haploid production in cereals

Дьячук

Akinina

Хомякова

et al. 2019

Biotehnologiâ i selekciâ rastenij

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Elimination of chromosomes is a phenomenon widespread in distant hybrids. It ranges from the loss of one or two chromosomes to elimination of whole chromosome complement of one of the parents. Such elimination leads to the production of haploid plants, which then are treated with colchicine to double the chromosome number and to develop DH‑lines. Homozygosity of doubled haploids serves as a basis for their wide use in plant genetics and breeding. The use of this approach reduces the time required for obtaining homozygous lines by 5 years on the average. It leads to savings in human resources, energy and acreage. The development of the “bulbosum” method for haploid barley production had a strong influence on the chromosome engineering in cereals and its implementation in plant breeding. However, the method developed on that basis could not be used effectively for producing haploids of wheat, triticale, etc. because of Hordeum bulbosum L. pollen sensitivity to genes inhibiting wheat crossability (Kr genes). The crosses with Imperata cylindrica (L.) Raeusch. is an efficient alternative to the widely used wheat × maize and triticale × maize crosses due to abundant pollen supply within a longer time period, significantly higher frequency of embryos formation and haploid plants regeneration.

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Section: получение гаплоидов пшеницыunclassified

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Distant hybridization as a method of haploid production in cereals

Дьячук

Akinina

Хомякова

et al. 2019

Biotehnologiâ i selekciâ rastenij

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“…This family covers about 40% of the land area and hence dominated the terrestrial ecosystem [2]. Oat is an important cereal crop which is used primarily for seeds, for human utilization as well as for fodder of livestock [3]. They are rich in soluble fibre, balanced proteins, vitamins as well as minerals which are valuable for human health [4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of seed priming with CuSO4 and ZnSO4 on germination and seedling growth of oat under NaCl stress

Iqbal¹

2020

PAB

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Salinity is a grave problem across the world which retards growth and productivity of plants. Seed priming is a technique which enhances growth and yield of crops by overcoming salt stress. Present study was conducted to examine the effect of grains priming of Avena sativa L. with different micronutrients (Cu & Zn) grown under NaCl stress. In this study grains of Avena were primed with two different concentration levels (100 & 200ppm) of CuSO4 & ZnSO4 solutions. After priming, these grains were treated with different levels of NaCl (60mM, 90mM & 120mM) and these results are compared with control groups. The effect of CuSO4, ZnSO4 and NaCl was observe on different physiological growth parameter including germination speed, germination percentage, root and shoot length, root and shoot fresh and dry biomass and biomoisture contents of root and shoot were observed. It was observed that grains without priming exhibited reduced growth under NaCl stress. Whereas priming of grains with CuSO4 and ZnSO4 showed improved growth in all growth traits as compared to non-primed seeds. It was evaluated that grains primed with ZnSO4 at 200ppm showed enhanced germination speed. Whereas grains treated with CuSO4 at 200ppm showed decreased germination speed. It was also demonstrated that priming of grains with both micronutrients (CuSO4 & ZnSO4) at 200ppm concentration exhibited higher shoot length as compared to Grains without priming grown in NaCl. It was concluded that seed priming technique can overcome the effects of salinity to some extent.

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