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Uji Stabilitas Lima Genotip Pepaya di Tiga Lokasi Sunyoto Sunyoto; Tri Budiyanti; Noflindawati Noflindawati; Dewi Fatria
Jurnal Hortikultura Vol 23, No 2 (2013): Juni 2013
Publisher : Indonesian Center for Horticulture Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jhort.v23n2.2013.p129-136

Abstract

Pengujian interaksi antara genotip dengan lingkungan (GxE) serta analisis stabilitas hasil suatu genotip merupakan tahap penting dalam program pemuliaan tanaman untuk mendapatkan calon varietas unggul baru. Penelitian bertujuan menguji stabilitas dan adaptasi empat genotip pepaya dan satu pembanding. Penelitian dilakukan di tiga lokasi yaitu, KP. Sumani, Balai Penelitian Tanaman Buah Tropika, Lubuk Alung, Sumatera Barat, dan KP. Subang, Jawa Barat, mulai Bulan Maret sampai Desember 2010 menggunakan rancangan acak kelompok. Perlakuan terdiri atas lima genotip pepaya, yaitu Merah Delima, BT-2, Carmina, Carmida, dan California dengan enam ulangan. Peubah yang diamati ialah persentase tanaman sempurna dan betina, tinggi bunga pertama, ruas letak bunga pertama, tinggi buah pertama, bobot buah, jumlah buah/pohon, produksi buah/pohon, dan padatan terlarut total (PTT) (oBrix). Hasil penelitian menunjukkan bahwa persentase tanaman berbunga sempurna dan berbunga betina pada genotip Merah Delima, BT-2, Carmina, dan Carmida mempunyai nilai koefisien regresi (βi)<1, berarti tahan terhadap perubahan lingkungan. Pengujian terhadap tinggi bunga pertama dan ruas letak bunga pertama memperlihatkan bahwa BT-2 dan California mempunyai koefisien regresi (βi)<1 (tidak responsif terhadap perubahan lingkungan). Interaksi varietas (genotip) dengan lokasi (lingkungan) terjadi pada karakter persentase tanaman berbunga sempurna, persentase tanaman berbunga betina, ruas letak bunga pertama, tinggi bunga pertama, bobot buah, produksi/pohon, dan PTT. Produksi buah/pohon Merah Delima dan Carmida mempunyai nilai koefisien regresi (βi) = 1 dan genotip memiliki rerata hasil di atas rerata umum yang berarti genotip tersebut beradaptasi baik terhadap semua lingkungan. Kedua genotip tersebut sangat potensial untuk dikembangkan di beberapa lingkungan karena beradaptasi baik pada tiga kondisi lingkungan dengan hasil di atas rerata. Oleh karena itu dapat direkomendasikan menjadi VUB yang dapat dikembangkan di lahan petani.
KERAGAMAN PENAMPILAN FENOTIP ENAM GENOTIPE PEPAYA HASIL PERSILANGAN Sunyoto Sunyoto; Liza Octriana; Tri Budiyanti
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.845 KB) | DOI: 10.14203/widyariset.17.3.2014.303-309

Abstract

Getting new varieties according to consumer preferences   can be carried out through crossbreeding (hy­ bridization) between elected elders. The results of such crossbreeding must be characterized and sorted to obtain new superior varieties that show the expected appearance of phenotype. The research aimed to get information about phenotypical appearance diversity and heritability value of some characters of some papaya hybrids. The study was conducted from March 2011 to February 2012 at the Sumani Research Station, Tropical Fruit Research Institute. The research was arranged in a randomized block design with six treatments and three replications. Each unit consisted of eight plants. The results showed that the phenotypical appearances such as fruit weight, fruit girth, fruit cavity width, and a larger number of perfect flowers, was influenced by genetic factors and had high heritability values. Genotypes  P 13, P 14, P 21, and P 31 could be the superior variety candidates because of their early maturity, low height of first flower and first fruit, i.e. < 1 m (low bearing), medium-sized fruit, thick fruit flesh and sweet taste, and PTT > 13° Brix. Some of papaya hybrids are expected to be new superior varieties of papaya Indonesian.
KERAGAMAN PENAMPILAN FENOTIP ENAM GENOTIPE PEPAYA HASIL PERSILANGAN Sunyoto Sunyoto; Liza Octriana; Tri Budiyanti
Widyariset Vol 17, No 3 (2014): Widyariset
Publisher : Pusbindiklat - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.845 KB) | DOI: 10.14203/widyariset.17.3.2014.303-309

Abstract

Getting new varieties according to consumer preferences   can be carried out through crossbreeding (hy­ bridization) between elected elders. The results of such crossbreeding must be characterized and sorted to obtain new superior varieties that show the expected appearance of phenotype. The research aimed to get information about phenotypical appearance diversity and heritability value of some characters of some papaya hybrids. The study was conducted from March 2011 to February 2012 at the Sumani Research Station, Tropical Fruit Research Institute. The research was arranged in a randomized block design with six treatments and three replications. Each unit consisted of eight plants. The results showed that the phenotypical appearances such as fruit weight, fruit girth, fruit cavity width, and a larger number of perfect flowers, was influenced by genetic factors and had high heritability values. Genotypes  P 13, P 14, P 21, and P 31 could be the superior variety candidates because of their early maturity, low height of first flower and first fruit, i.e. < 1 m (low bearing), medium-sized fruit, thick fruit flesh and sweet taste, and PTT > 13° Brix. Some of papaya hybrids are expected to be new superior varieties of papaya Indonesian.
Co-Authors Dewi Fatria Liza Octriana Noflindawati Noflindawati Tri Budiyanti Tri Budiyanti