We assessed the outcrossing rate of sorghum landraces sampled in situ from two fields under tradi... more We assessed the outcrossing rate of sorghum landraces sampled in situ from two fields under traditional cultivation in north-western Morocco using genotypic data from five microsatellite loci. Assuming a mixed mating model, we estimated outcrossing parameters by two methods that are based on progeny analyses. With both methods, the multilocus estimate of outcrossing rate for the overall sample was in the order of 0.1, meaning that sorghum landraces are predominantly autogamous, but with a significant proportion of outcrossing. The estimated outcrossing rate is about two times higher in field 1 (t m= 0.161) than in field 2 (t m= 0.069). This difference could be explained by distinct morphological characteristics of the inflorescence in the two fields, with predominance of loose panicles in field 1 and of very compact panicles in field 2. The distribution of outcrossing rate among progeny families showed that 30% of them were completely self-fertilized but some families showed substantial outcrossing. These results are at odds with the very low genetic differentiation observed previously among Moroccan landraces and suggest that morphological differences are maintained despite gene flow through seed exchanges among farmers.
Indonesia merupakan negara agraris yang memiliki banyak potensi besar di bidang pertanian, baik t... more Indonesia merupakan negara agraris yang memiliki banyak potensi besar di bidang pertanian, baik tanaman hortikultura, tanaman pangan, maupun tanaman perkebunan. Sektor perkebunan merupakan salah satu sektor andalan Indonesia, karena perkebunan memberikan sumbangan devisa yang cukup besar bagi cadangan devisa Nasional. Selain itu dengan berkembangnya perkebunan di
Potensi perikanan laut Indonesia yang terdiri atas potensi perikanan pelagis dan demersal terseba... more Potensi perikanan laut Indonesia yang terdiri atas potensi perikanan pelagis dan demersal tersebar pada hampir semua bagian perairan laut Indonesia seperti pada perairan laut teritorial, nusantara, dan Zona Ekonomi Ekslusif (ZEE). Luas perairan laut Indonesia di perkirakan sebesar 5,8 juta km2 dengan garis pantai terpanjang kedua di dunia setelah Canada, yaitu 81.000 km² dan gugusan pulaupulau sebanyak 17.808 buah pulau. Pemanfaatan potensi perikanan laut Indonesia ini walaupun telah banyak mengalami peningkatan pada beberapa aspek, namun secara signifikan belum dapat memberikan kekuatan dan peran yang lebih kuat terhadap pertumbuhan perekonomian dan peningkatan pendapatan masyarakat nelayan Indonesia (Dahuri, 2001).
We assessed the outcrossing rate of sorghum landraces sampled in situ from two fields under tradi... more We assessed the outcrossing rate of sorghum landraces sampled in situ from two fields under traditional cultivation in north-western Morocco using genotypic data from five microsatellite loci. Assuming a mixed mating model, we estimated outcrossing parameters by two methods that are based on progeny analyses. With both methods, the multilocus estimate of outcrossing rate for the overall sample was in the order of 0.1, meaning that sorghum landraces are predominantly autogamous, but with a significant proportion of outcrossing. The estimated outcrossing rate is about two times higher in field 1 (t m= 0.161) than in field 2 (t m= 0.069). This difference could be explained by distinct morphological characteristics of the inflorescence in the two fields, with predominance of loose panicles in field 1 and of very compact panicles in field 2. The distribution of outcrossing rate among progeny families showed that 30% of them were completely self-fertilized but some families showed substantial outcrossing. These results are at odds with the very low genetic differentiation observed previously among Moroccan landraces and suggest that morphological differences are maintained despite gene flow through seed exchanges among farmers.
Indonesia merupakan negara agraris yang memiliki banyak potensi besar di bidang pertanian, baik t... more Indonesia merupakan negara agraris yang memiliki banyak potensi besar di bidang pertanian, baik tanaman hortikultura, tanaman pangan, maupun tanaman perkebunan. Sektor perkebunan merupakan salah satu sektor andalan Indonesia, karena perkebunan memberikan sumbangan devisa yang cukup besar bagi cadangan devisa Nasional. Selain itu dengan berkembangnya perkebunan di
Potensi perikanan laut Indonesia yang terdiri atas potensi perikanan pelagis dan demersal terseba... more Potensi perikanan laut Indonesia yang terdiri atas potensi perikanan pelagis dan demersal tersebar pada hampir semua bagian perairan laut Indonesia seperti pada perairan laut teritorial, nusantara, dan Zona Ekonomi Ekslusif (ZEE). Luas perairan laut Indonesia di perkirakan sebesar 5,8 juta km2 dengan garis pantai terpanjang kedua di dunia setelah Canada, yaitu 81.000 km² dan gugusan pulaupulau sebanyak 17.808 buah pulau. Pemanfaatan potensi perikanan laut Indonesia ini walaupun telah banyak mengalami peningkatan pada beberapa aspek, namun secara signifikan belum dapat memberikan kekuatan dan peran yang lebih kuat terhadap pertumbuhan perekonomian dan peningkatan pendapatan masyarakat nelayan Indonesia (Dahuri, 2001).
Uploads
Papers by paw adi