Pigeon pea has great potential to be alternate source of plant protein. The potential of pigeon pea needs to be improved by plant breeding program. Genetic information are needed to improved plant breeding. This research aims to gain genetic information based on chromosome numbers, chromosome shape and chromosome length to visualize pigeon pea karyotypic. The research was conducted at Plant Physiology and Biotechnology Laboratory Faculty of Agriculture Sebelas Maret University and Plant Breeding Laboratory Mendel Room Faculty of Agriculture Gadjah Mada University. This research had be done by making glass slides using squashing method include fixation use Carnoy 1 solution (3 absolute ethanol: 1 96% acetic acid), hydrolysis (1N HCl) and chromosome staining (aceto orcein 2%). The results showed that chromosome number of pigeon pea is 2n = 2x = 22 with chromosome length 5.73 ± 1.15 μm until 10.92 ± 2.69 μm. Shape of pigeon pea chromosomes are metacentric and submetacentric which are metacentric is dominant. Karyotypic formula of pigeon pea is 2n = 2x = 9 m + 2 sm. Intrachromosomal asymmetry index (As1%) of pigeon pea is 59% and Intrachromosomal asymmetry index (A2) value of pigeon pea is 0.34 ± 0.02.
Indonesia’s palm oil production needs to be developed; generative sapodilla cultivation has a very long growth. The effort that can be done to increase the growth of sapodilla seeds for the provision of quality seedlings. Giving chitosan expected to increase the growth of sapodilla seeds because there is chitosan content that accelerate plant growth, and age planting shorter. The aim of this research is to know the concentration and time of spraying of chitosan to be applied to generative sapodilla seeds. The study used Randomized Complete Block Design (RAKL) of 2 factors. The first factor was chitosanic concentration consisting of four levels (0, 2, 4, and 6 mL/L) and the spraying time consisted of three levels (morning, afternoon, and morning and afternoon), each treatment combination was repeated three times. that the concentration of chitosan has significant effect to the leaf area with the best treatment at 6 mL/L concentration and the time of spraying treatment had significant effect on the increase of the number of branches with the best treatment during the morning spraying.
Persimmon (Diospyros kaki L.) belongs to the family Ebenaceae is widely grown in the climate zones range in the world. Persimmon grows well in media rich in organic matter with sufficient water content and generally at an altitude above 1000 masl. It is one type of subtropical fruit plant that is classified as rare in Indonesia. It has the potential to be developed for cultivation. The diversity characteristics of persimmon in each region are represented by the qualitative and quantitative. It may be caused by environmental factors or gene changes. Thus, the lack of environmental factors, plant growth will be disorder and will stop. Temperature is one of the factor affecting photosynthesis and plant metabolism at the cellular level. The difference in the temperatur range can be attributed to variations in latitude, topography, proximity to large bodies of water represented. The research aimed to identify morphological characters of persimmon at Selo District and to determine the level of persimmon diversity based on their morphological characters. The research was conducted in February – May 2020 in Selo Village, Boyolali, Central Java Province. This research used 15 samples of persimmon plant. The observation variable include geographical conditions and plant morphological characteristics (trees, stems, leaves, fruits). The data obtained were presented descriptively. The grouping of elements between samples was carried out by cluster analysis with the UPGMA method using the NTSYS. The results of the cluster analysis were presented in the form of dendogram. The results showed that Selo, persommon had various characters but several observation variables showed uniformity. The persimmon similarity coefficient is 0.66.
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