Is intergeneric hybridization in the Leguminosae possible?

McComb, J.

doi:10.1007/bf00028219

Cited by 20 publications

(7 citation statements)

References 11 publications

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“…The high frequency of recombination in the hybrid further confirms the proximity of the two parental species and suggests that the two species have differentiated through structural alterations of chromosomes (probably translocations). Our findings support the conclusions of some workers (McComb 1975;van der Maesen 198 1 ) that the taxonomic separation of Cujunus and A~l o s i a should not be maintained.…”

Section: Resultssupporting

confidence: 92%

Nucleolar variation in a pigeon pea intergeneric hybrid: evidence for allosyndetic recombination

Kumar¹,

Subrahmanyam²,

Faris³

1984

Can. J. Genet. Cytol.

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FARIS. 1984. Nucleolar variation in a pigeon pea intergeneric hybrid: evidence for allosyndetic recombination. Can. J . Genet. Cytol. 26: [499][500][501][502][503][504][505]. Cytological study of a hybrid between Ccljnnus c.cljnn and At~losicr crlbic-crns revealed regular bivalent formation and disjunction. Nevertheless, high pollen sterility and low seed set were evident. An examination of pollen mother cells revealed variation in nucleolar number at telophase-l (four to eight) and at telophase-11 (zero to four in daughter nuclei), although each genome contained two nucleolar organizers. Variation was also recorded for nucleolar size and distribution at telophase-11. Variation in nucleolar number and distribution are interpreted to have originated from pairing and recombination between nucleolar organizer chromosome(s) of one parental species with the nonnucleolar organizer chromosome(s) of the other. Size variation is attributed to nucleolar dominance. These results explain the high degree of pollen sterility in the hybrid in spite of normal meiosis. and also suggest that the karyotypes of C . c~l j c r t l and A. trll3ic.trtl.s have differentiated through structural heterozygosity .K~J w*ords: Ccljnni~s c.trjatl. At!slo.sitr cl1hic.crtl.s. nucleolar variation, structural heterozygosity. allosyndetic recombination. KUMAR. P.-s.. N C. SCBRAHMANYAM et D. G. FARIS. 1984. Nucleolar variation in a pigeon pea intergcncric hybrid: evidence for allosyndetic recombination. Can. J . Genet. Cytol . 26: 499-505. L'analqse cytologique d'un hybride entre Cc!jtrtlus c.cljtrtl et At~lositr trlhic,trtls a d6nlontrC un processub de formation et de disjonction normal des bivalents. Cependant on a trouv6 dcs indices de forte stkrilit6 du pollen et dc faible production degraines. Un examen des cellules meres du pollen a revel6 une variation du nonlbre nuclkolaire (quatre h huit) i la tklophase-1 et (zero h quatre chez les noyaux soeurs) h la telophase-11. quoique chaque genome contient deux organisateurs nucleolaires. On a aussi note une variation de la grosseur du nucleolc et de sa distribution h la tklophase-11. On attribue la variation du nombre et de la distribution des nucleoles h I'appariement et h la recombinaison entre (le(s) chromosome(s) d'organisateur nucleolaire d'une espece parentale avec le(s) chromosorne(s) d'organisateur non nucleolaire de I'autre. La variation de la grosscur est imputee h la dominance nucleolaire. Ces resultats expliquent le haut taux de sterilitc du pollen chez l'hybride malgre une meiose normale, et suggerent de plus que les caryotypes de C . c~l j c r t l et de A. crlbit~rtls se sont differenties par hetcrozygosite structurale.

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Section: Resultssupporting

confidence: 92%

Nucleolar variation in a pigeon pea intergeneric hybrid: evidence for allosyndetic recombination

Kumar¹,

Subrahmanyam²,

Faris³

1984

Can. J. Genet. Cytol.

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“…Long term "variety evolution" should be developed in this direction so that the pea crop would become more selfsupporting, as has been the case inside Phaseolus (Smartt 1976). With this object in view, variability could be widened by crosses between species or by gene transfers (Comb 1975). …”

Section: Lodging Of Normal Leafed Vs Afila-peasmentioning

confidence: 99%

Breeding of a protein pea ideotype for Finnish conditions

Hovinen¹

1988

AFSci

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Abstract. The characteristics of protein pea (Pisum sativum L.) adapted to cultivation in Finnish conditions were specified. Ideotypes for pure and mixed stands were defined separately. Factors affecting seed yield, protein yield and protein content were determined. Efficiency of biological nitrogen fixation in the varieties was evaluated at two nitrogen application levels, 16 and 80 kg/ha. Selection methods for increasing protein content were discussed. The commercial varieties bred during the programme were presented. The effect of the gene af on different characteristics of the pea was the central object of the studies.The ideotype of peas for cultivation in Finland has to be of the afila-type. This concerns cultivation in both pure and mixed stands. Afila-peas gave seed yields and protein yields as high as the leafed ones. The lodging of afila-peas throughout the generative growth phase was less than that of the conventional leaf types. In mixed cropping the most suitable afila-peas generally formed almost completely unlodged stands together with cereals. The best seed yields were given by the varieties with a stem height of 61 to 94 cm. Due to competition, the corresponding height in mixed stands ranged from 80 to 100 cm. For the same reason, varieties to be used in mixed stands must possess a fairly large seed size and fast growth rate after emergence.The optimum flowering period lasted from 19 to 28 days. The varieties must be early, with a growing time from 91 to 101 days. Late varieties are not adapted to northern conditions, giving low yields and poor quality.The mean yield of the varieties was 4500 kg/ha in pure stands. The high nitrogen application level of 80 kg/ha did not increase pea yield in comparison with the 16 kg/ha level. In contrast, it enhanced the protein content by 1 % and the protein yield slightly. In mixed stands the mean total yield was 4700 kg/ha. The hectare yields of crude protein reached levels of 990 and 900 kg respectively. Early varieties tend to have a low protein content. The protein content ranged from 15.4 to 27.6 per cent in the unselected line material. A negative, although weak correlation was found between seed yield and protein content. A variety with the highest protein yield must exceed the average level both in seed yield and protein content. The varieties with the highest protein yields had a content of 23 -27 per cent.

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“…rhomboi dea, hibrida F 1 yang dihasilkan sebagian fertil. Pada kondisi rumah kaca, tanaman F 1 berbunga banyak tetapi gugur setelah anthesis sehingga tidak menghasilkan polong (McComb, 1975). Hasil penelitian Rawal (1975) menunjukkan bahwa pada keadaan kelembaban yang tinggi dan temperatur yang rendah tanaman F 1 menghasilkan polong pada frekuensi yang lebih tinggi dan polong yang dihasilkan rata-rata berisi tiga biji.…”

Section: Hasil Dan Pembahasanunclassified

Kajian Heritabilitas dan Heterosis pada Persilangan antara Kacang Tunggak dengan Kacang Panjang

Ujianto¹,

Idris²,

Yakop³

2016

BPN

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Study of Heritability and Heterosis on Hybridization between Cowpea and Longbean. Lestari Ujianto, Idris, and Uyek M. Yakop. The objectives of this research were to study the success rate of crossing and heritability on interspecific hybridization between several NTB local varieties of cowpea and several varieties of long bean. This research consisted of 3 stages i.e. (1) hybridization between cowpea and long bean; (2) evaluation of F 1 generation; (3) backcrossing between F 1 with both parents. The observed data is analyzed to estimate the degree of crossability, value of broad sense heritability, coefficient of genetic variance. The result of this research indicated that: (1) interspecific crossing between cowpea NTB local varieties and long bean have different degree of successful with range 31 to 57% as well as on back crossing degree of successful with range 35 to 61%; (2) the characteristic of pod length and plant height indicated the high broad sense heritability value, and (3) there was hybrid vigor for diameter of pods on all cross combinations with heterosis and heterobeltiosis values ranging 11.4-27.0% and10.1-18.9% respectively. Keywords:Crossing, heterosis, heritability, interspecific hybridization. ABSTRAKTujuan penelitian adalah untuk mengkaji tingkat keberhasilan persilangan, pendugaan gejala heterosis dan daya waris sifat pada persilangan antarspesies beberapa varietas kacang tunggak lokal NTB dengan beberapa varietas kacang panjang. Penelitian terdiri atas tiga tahap kegiatan, yaitu (1) persilangan kacang tunggak dan kacang panjang; (2) evaluasi hasil persilangan antara kacang tunggak dan kacang panjang; (3) silang balik antara hasil persilangan yang unggul dengan kedua tetuanya. Data hasil pengamatan dianalisis untuk menduga tingkat keberhasilan persilangan, pendugaan nilai heritabilitas arti luas, dan pendugaan koefisien keragaman genetik. Hasil dari penelitian menunjukkan bahwa (1) persilangan antarspesies kacang tunggak varietas lokal NTB dengan kacang panjang memiliki tingkat keberhasilan persilangan yang berbeda berkisar antara 31-57%. Demikian juga untuk silang balik tingkat keberhasilan persilangannya berkisar antara 35-61%; (2) sifat panjang polong dan tinggi tanaman menunjukkan nilai duga heritabilitas arti luas yang tinggi; (3) terdapat vigor hibrida untuk diameter polong pada semua pasangan persilangan dengan nilai heterosis berkisar antara 11,4-27,0% dan nilai heterobeltiosis 10,1-18,9%.Kata kunci: Persilangan, heterosis, heritabilitas, persilangan antarspesies. PENDAHULUANKacang tunggak (Vigna unguiculata L. Walp.) varietas lokal NTB mempunyai keragaman genetik yang tinggi, baik sifat kualitatif maupun kuantitatif, sehingga potensial untuk dikembangkan menjadi varietas unggul melalui program pemuliaan (Ujianto et al., 2003). Tanaman kacang tunggak memiliki banyak keunggulan, antara lain kandungan gizinya yang tinggi, terutama sebagai sumber protein, umur pendek, mampu tumbuh baik di lahan kering maupun lahan marginal. Kelemahan kacang tunggak adalah polong mudanya keras se...

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Is intergeneric hybridization in the Leguminosae possible?

Cited by 20 publications

References 11 publications

Nucleolar variation in a pigeon pea intergeneric hybrid: evidence for allosyndetic recombination

Nucleolar variation in a pigeon pea intergeneric hybrid: evidence for allosyndetic recombination

Breeding of a protein pea ideotype for Finnish conditions

Kajian Heritabilitas dan Heterosis pada Persilangan antara Kacang Tunggak dengan Kacang Panjang

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