Breeding and variety improvement.

Chan, Y.K.; D'Eeckenbrugge, Géo Coppens; Sanewski, Garth M.

doi:10.1079/9780851995038.0033

Cited by 33 publications

(29 citation statements)

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“…The world production of pineapple fruit was more than 18 million tons in 2007 (FAOSTAT 2008). The world pineapple industry is dominated by the cultivar Smooth Cayenne and its derivatives (Chan et al 2002). Although extensive efforts have been made to produce improved varieties via hybridization of this self-incompatible monocot species, only a few new hybrids have been released worldwide.…”

Section: Introductionmentioning

confidence: 99%

Production of transgenic pineapple (Ananas cosmos (L.) Merr.) plants via adventitious bud regeneration

Wang

Uruu

Xiong

et al. 2009

In Vitro Cell.Dev.Biol.-Plant

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A new protocol for the production of transgenic pineapple plants was developed. Adventitious buds were induced directly from Agrobacterium-infected leaf bases and stem discs of in vitro plants, bypassing the establishment of callus cultures. Non-chimeric transgenic plants were obtained by multiple subculturing of primary transformants under increasing levels of selection. A total of 42 independent transgenic lines were produced from two cultivars with two different constructs: one containing a modified rice cystatin gene (Oc-IΔD86) and the other with the anti-sense gene to pineapple aminocyclopropane synthase (ACS). GUS histochemical staining provided the first evidence of the non-chimeric nature of the transformed plants. Their non-chimeric nature was further demonstrated by PCR analyses of the DNA extracted from individual leaves of a primary transformed plant and also from multiple plants propagated from a single transformation event. Southern hybridization confirmed random integration patterns of transgenes in the independent lines. For the Oc-IΔD86 gene, the expression at the mRNA level was detected via RT-PCR and its translation was detected by protein blot. Agronomic evaluation and bioassays of the transgenic plants will further validate the utility of this new tool for pineapple improvement.

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Section: Introductionmentioning

confidence: 99%

Production of transgenic pineapple (Ananas cosmos (L.) Merr.) plants via adventitious bud regeneration

Wang

Uruu

Xiong

et al. 2009

In Vitro Cell.Dev.Biol.-Plant

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“…Keenam varietas yang ditanam pada penelitian ini termasuk dalam jenis smooth cayenne. Nenas dari jenis smooth cayenne atau cayenne Lisie mempunyai ukuran tanaman medium (80-100 cm), dengan 60-80 helai daun berwarna hijau gelap (panjang 100 cm dan lebar 6 cm), memiliki duri kecil di ujung dan dasar daun (Chan et al, 2003 Korelasi yang baik antara jumlah daun dan diameter tajuk dengan ukuran buah terjadi karena fotosintat yang dihasilkan lebih banyak dan efisiensi penerimaan cahaya yang baik (Nitrisari dan Sobir, 2002). Pernyataan ini terlihat pada varietas SBG yang mempunyai bobot buah yang lebih besar dibanding yang lain karena memiliki daun yang lebih banyak.…”

Section: Karakter Vegetatif a Tanaman Nenasunclassified

“…Pengukuran pada panjang dan diameter buah menunjukkan bahwa varietas yang lebih panjang dan diameter lebih besar adalah PK dan SBG. Tinggi tanaman, jumlah daun, dan lebar daun berkorelasi positif dan nyata dengan diameter buah (Nasution 2010 Smooth cayenne mempunyai daging berwarna kuning pucat, lembut, juicy, dengan nilai kemanisan 13 o sampai 19 o brix dan nilai keasaman yang tergantung kondisi lingkungan serta rendah asam askorbat (Chan et al, 2003). Pengukuran Total asam terlarut menggunakan sari buah nenas 10 ml yang diencerkan sampai 100 ml hasilnya menunjukan meq per 100 ml jus (meq 100 -1 ml -1 ).…”

Section: B Tangkai Dan Buahunclassified

Simulasi Uji BUSS (Baru, Unik, Seragam Stabil) Enam Varietas Nenas (Ananas comosus L. Merr.).

Aryawati¹,

SOBIR²

2014

AGROB

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Penelitian ini bertujuan untuk mengetahui karakter keunikan, keseragaman, dan kestabilan dari enam varietas nenas sebagai simulasi UJI BUSS untuk permohonan hak Perlindungan Varietas Tanaman. Penelitian dilaksanakan di Kebun Percobaan Pasir Kuda, Bogor, Jawa Barat. Bahan percobaan terdiri dari enam varietas nenas yang terdiri dari varietas yang diuji yaitu Dole 14, P-1972, Mayan Gold 01, Champaka, Pasir Kuda dan varietas referensi yaitu varietas Subang. Hasil penelitian menunjukkan bahwa keenam varietas dapat dinyatakan berbeda. Perbedaan antara varietas kandidat dengan varietas referensi terdapat tujuh karakter pada bagian tanaman, enam karakter pada bagian daun, empat karakter pada bagian bunga, sembilan belas karakter pada bagian tangkai buah dan buah. Keenam varietas dapat dinyatakan seragam dan stabil. Tipe simpang hanya ditemukan pada satu tanaman dengan dua crown pada varietas Subang, jumlah tipe simpang yang ditemukan masih dibawah batas standar keseragaman.

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“…P. parasitica ) as the most frequent causal agent of PHR, especially in tropical latitudes or during warm seasons (Rohrbach & Schenck, ; Rodríguez et al ., ; Shen et al ., ; Espinosa‐Rodríguez et al ., ). MD‐2 is more susceptible to P. nicotianae infection than Smooth Cayenne (Chan et al ., ), especially if soil pH is alkaline and poorly drained (Rohrbach & Johnson, ). Phytophthora nicotianae causes polycyclic outbreaks that ultimately result in plant mortality and reduction of crop density (Rohrbach & Johnson, ; Mammella et al ., ; Ludowici et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Pineapple heart rot isolates from Ecuador reveal a new genotype of Phytophthora nicotianae

et al. 2018

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Pineapple heart rot disease, caused by Phytophthora nicotianae (syn. P. parasitica), is responsible for significant annual reductions in crop yield due to plant mortality. In Ecuador, new infections arise during the rainy season and increase production costs due to the need for biocontrol and fungicide applications. Studies of P. nicotianae population structure suggest that certain genetic groups are associated with host genera; however, it is not clear how many host-specific lineages of the pathogen exist or how they are related. The objectives of this study were to determine the level of genetic variation in the P. nicotianae population causing heart rot disease of pineapple in Ecuador and compare the genotypes found on pineapple to those previously reported from citrus, tobacco and ornamentals. Thirty P. nicotianae isolates collected from infected pineapple leaves from four farms were genotyped using nine simple sequence repeat loci. In addition, the DNA sequences of mitochondrial loci cox2 + spacer and trnG-rns were analysed. Together, these loci supported a single clonal lineage with two multilocus genotypes differing in a single allele and low mitochondrial diversity. This lineage was distinct but closely related to isolates collected from vegetables and ornamentals in Italy. The results support the hypothesis of host specialization of P. nicotianae in intensive cropping systems and contribute to the understanding of population structure of this important pathogen.

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Breeding and variety improvement.

Cited by 33 publications

References 0 publications

Production of transgenic pineapple (Ananas cosmos (L.) Merr.) plants via adventitious bud regeneration

Production of transgenic pineapple (Ananas cosmos (L.) Merr.) plants via adventitious bud regeneration

Simulasi Uji BUSS (Baru, Unik, Seragam Stabil) Enam Varietas Nenas (Ananas comosus L. Merr.).

Pineapple heart rot isolates from Ecuador reveal a new genotype of Phytophthora nicotianae

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