The genus Narcissus belongs to the family Amaryllidaceae. This has been subject of numerous cytological and cytometric studies have shown enormous variation in terms genome size, ploidy level, even basic chromosome number. numbers are 5 or 7, but 10, 11, 12 recorded as well. Most narcissus cultivars euploid tetraploids. There also triploids. Some aneuploid such tetraploids triploids, with missi...

The nucleotide sequence of the genomic RNA of narcissus mosaic virus (NMV) was deduced from a set of cDNA clones and by direct sequencing of RNA. The genome, with a length of 6955 nucleotides [excluding the 3'poly(A) tail], contains six open reading frames (ORFs) with the capacity to code for polypeptides of more than 10K, with Mr values of 186284, 25845, 13998, 11059, 26097 and 10519. The firs...

Every injective function has an inverse, although constructing the inverse for a particular injective function can be quite tricky. One common instance of inverse-function pairs is the binary encoders and decoders used to convert in-memory data into and out of a structured binary format for network communication. Ensuring that a given decoder is a proper inverse of the original encoder is parti...

We used a PCR-based subtractive procedure to isolate genes that increased in abundance in the perianth of incipiently senescent daffodil (Narcissus pseudonarcissus L. ‘Dutch Master’) flowers. Using RNA gel blot analysis we confirmed that 18 of the transcripts were senescence-associated. A number of these have homologs in previously-studied senescing floral and leaf tissue systems (cysteine prot...

the aim of this study was to evaluate the physiological and morphological characteristics of narcissus tazatta in response to benzyl adenine (ba) and nano-potassium fertilizer. this experiment was done as factorial with two factors of benzyl adenine hormone and nano-potassium fertilizer in a completely randomized design with ten replications.  benzyl adenine in four levels (0, 500, 750 and1000 ...