Morphological and cytological studies on induced polyploidy in &lt;i&gt;Sesamum indicum&lt;/i&gt; L.

Kobayashi, Tetsuro; Shimamura, Tamaki

doi:10.1266/jjg.27.157

Cited by 9 publications

(6 citation statements)

References 6 publications

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“…Similar cytological manifestations were reported for induced-autopolyploid perennial species such as Miscanthus sp. (Glowaka et al 2010), annual crop species like Sesamum indicum L. (Kubayashi and Shimamura 1952), domesticated vegetable species including Capsicum annum L. cv. 'GVC-111' (Kulkarni and Borse 2010), and ornamental woody species, among them Lagerstroemia indica L. (Zhang et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Morphological changes and self-incompatibility breakdown associated with autopolyploidization in Hylocereus species (Cactaceae)

Cohen

Tel-Zur

2011

Euphytica

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Chromosome duplication-autopolyploidization-may affect plant morphology and breeding systems, ultimately enabling the production of improved genotypes. In this study, the autotetraploid lines obtained from the self-incompatible diploid Hylocereus monacanthus and the autooctapolyploid lines obtained from the self-compatible tetraploid H. megalanthus were studied and compared with the donor accessions. The resulting H. monacanthus autotetraploids exhibit lower fruit weight, seed number, and pollen viability than the donor plant, but it has larger pollen grains. Although the resulting H. megalanthus autooctaploids had larger pollen grains and lower pollen viability compared with the donor plant, only aborted fruits were obtained from these lines. The most valuable change observed was the breakdown of the self-incompatibility system in the H. monacanthus autotetraploid lines. This research provides important information on the horticultural value of vine cacti autopolyploid lines.

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Section: Discussionmentioning

confidence: 99%

Morphological changes and self-incompatibility breakdown associated with autopolyploidization in Hylocereus species (Cactaceae)

Cohen

Tel-Zur

2011

Euphytica

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“…Phyllotaxis of sesame plant is genetically important as a character for classifing this species, and this classification is connected with arrangement of capsule on stem (Hiltebrandt 1932, Nohara 1933, Langham 1945b, Kobayashi and Shimamura 1952. However, in plants treated with comaratively higher doses, altered types of phyllotaxis were often seen throughout three different forms (Table 3).…”

Section: Resultsmentioning

confidence: 99%

“…The exhibition of these leaf aberrations was inheritable although unstable. Among certain varieties of sesame cultivated in Japan and Nepal, three lobed or parted leaves are seen spontaneously at each node (Nohara 1933, Kobayashi 1952-1953.…”

Section: Resultsmentioning

confidence: 99%

“…whereas the capsule of WD8 consists of four carpels with two loculi each, making eight loculi per capsule (Table 1, Fig. 1, Hiltebrandt 1932, Nohara 1933, Kobayashi and Shimamura 1952).…”

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“…two opposite leaves per node, and this opposite arrangement is very important as one of the genetic characteristics in the form of WD plant(Fig. 1,Table 1,Kobayashi and Shimamura 1952). The plant with a ternate arrangement, however, yielded three leaves radial per node by adding one new leaf(Fig.…”

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Radiation Genetics of Sesame Part III

Kobayashi

1958

The Japanese journal of genetics

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I. Introduction Since 1953, the author has been studying the cytogenetical effects on and the production of mutants in sesame (Sesamum indicum L.) by using several ionizing radiations; some results obtained have already been reported (Kobayashi 1954-1958). The present study deals with the morphological changes as well as with the characteristics of mutants induced by radiation treatments. It is found that the type of morphological changes and the occurrence of mutants induced by radiation are closely related to the evolution of sesame. Some important facts are; Alteration of phyllotaxis and leaf shape, development of nectary or differentiation to functional flower or capsule containing fertile seeds, alteration of number of loculus per capsule, etc. Thus, among the induced mutant types there are found the same types of morphology as found in cultivated types in Japan. The fact that the nectary of sesame used in the present study is proved to be homologous with the flower bud may be noteworthy in the field of experimental morphology. These obtained facts may contribute to finding the role of ionizing radiation in morphogenesis and, further, to reveal the mechanism of sesame evolution. II. Materials and methods Three diploid forms of cultivated sesame (Sesamum indicum L.), BID (BAN-type), WD(3B0-type), and WD8(QAN-type)*, were selected as materials for the present experiment. Since 1947, each of the three types was selfed and bred true. These three

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