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WEDA MAKARTI MAHAYU, WEDA MAKARTI
Balai Penelitian Tanaman Palma

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KARAKTERISTIK AGROMORFOLOGI DAN POLA PEWARISAN WARNA PELEPAH DAUN BIBIT KELAPA PADA PERAKITAN VARIETAS KELAPA HIBRIDA TIPE BARU Romadhon, Muhammad Roiyan; Mahayu, Weda Makarti; Miftahorrachman, nFn; Maskromo, Ismail
Buletin Palma Vol 22, No 2 (2021): December 2021
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/bp.v22n2.2021.63-72

Abstract

Tipe kelapa Dalam pada umumnya memiliki pola menyerbuk silang, sedangkan kelapa genjah pada umumnya menyerbuk sendiri. Persilangan Kelapa Genjah x Kelapa Dalam akan mewariskan sifat heterosis pada turunan F1, dan tingkat heterosis tergantung daya gabung kedua tetuanya. Keberhasilan persilangan Genjah x Dalam pada tingkat bibit dapat dilihat dari pelepah daun bibit F1 berdasarkan warna kecambah/pelepah bibit kedua tetuanya. Warna kuning bersifat resesif terhadap warna hijau dan coklat, sedangkan warna merah bersifat dominan terhadap warna hijau dan kuning. Penelitian menggunakan Rancangan Acak Kelompok dengan tiga ulangan. Penelitian  ini bertujuan untuk  memperoleh informasi tentang pola pewarisan beberapa karakter kualitatif pada tanaman kelapa hasil persilangan pada fase bibit. Hasil penelitian menunjukkan bahwa persilangan antara GMM  x DTA, GMM x DBI, dan GMM x DPU menghasilkan anakan 100% berwarna cokelat yang dikendalikan oleh gen RrGg, sedangkan persilangan antara GKM x DTA, GKM x DBI, dan GKM x DPU menghasilkan anakan 100% berwarna hijau (rrGg). Pemilihan tetua betina untuk perakitan hibrida kelapa sebaiknya menggunakan pohon yang berwarna hijau karena akan menghasilkan turunan yang mudah ditelusuri jika terjadi kontaminasi polen. 
Hengniu: Fast Bearing and High Yielding Coconut Varieties Novarianto, Hengky; Tulalo, Meity A.; Mawardi, Sukmawati; Mahayu, Weda Makarti
International Coconut Community Journal Vol 40 (2024): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v40i.477

Abstract

Benefits of coconut varieties that stakeholders want are early bearing, high yielding, short stems, and slow growth for height. Most local tall coconut palms in Indonesia have stem height above 20 m, making it increasingly difficult to climb to harvest fruit or tapping sap thereby making the harvesting cost high. To breed varieties of desired characters, an evaluation trial was initiated in 2014 with BYD x MTT-S4, RAD x MTT-S4, and KHINA-1 as a control. The crossing was done in 2012 and seedlings planted in January 2014 at Mapanget Experimental Garden, Indonesian Palma Crops Research Institute, North Sulawesi. The study used a Randomized Block Design (RBD) of three types of coconut hybrids, four replications with a plot size of 16 trees. Morphological observations were carried out on stem, crown and leaf characters, inflorescences and flowers, nut production, fruit components, copra, oil content, and fatty acid composition. The results of ANOVA analysis and statistical tests obtained those vegetative characters, such as stem circumference and number of leaf, generative characters namely the number of bunches, first flowering, and fruit production of these three crosses at the age of 4 years after planting, did not show a significant difference. The first initial flowering was in the coconut hybrid of RBD x MTT-S4, which is 26 months, followed by BYD x MTT-S4 in 32 months and KHINA-1 in 36 months after planting. The results of the analysis of fruit and copra production at the age of 5 years showed a significant increase between hybrid coconuts. The highest to lowest fruit production was obtained in BYD x MTT-S4 hybrid coconut, RBD x MTT-S4, KHINA-1, which were 64 nuts, 44 nuts and 26 nuts /palm respectively, or estimated copra production was 2.26 tons, 1.45 tons and 0.88 tons copra/ha. At 6 years old the harvest of fruits from the three hybrid coconuts is obtained sequentially 118 nuts, 99 nuts and 94 nuts/palm. While estimation of copra yield per hectare is found the highest in BYD x MTT-S4 hybrid coconut is 3.86 ton/ha/year and this yield differently significant compare with RBD x MTT-S4 is found 3.04 ton/ha/year, and control hybrid of KHINA-1, which is about 2.74 ton/ha/year. Based on the production potential, hence the estimated optimum production when aged over 10 years can reach more than 5 tons/ha/year. The hybrid coconut variety BYD x MTT-S4 is released in October 2019 under the name HENGNIU.