Assessing the genetic diversity for miniaturization of crop collections to form mini core collection will lead to greater utilization of germplasm to develop improved crop cultivars along with effective maintenance of it. It has become vital to perform this for traditional Rice (Oryza sativa L.) varieties when considering the arising demand for their qualities. This study was conducted to asses...

homozygotes. Moreover, all wild types studied so far have been heterozygotes and both homozygotes. +/+ and p/p, produced in breeding experiments show low viability. In addition, in all crosses where the end results were homozygotes and heterozygotes, the ratios are always skewed toward the latter. This investigation seems to support the thesis that in populations of T . pyriformis an outbreedin...

The U.S. Plant Variety Protection Act (PVPA) of 1970 was meant to strengthen intellectual property protection for plant breeders. A model of investment under partial excludability is developed, leading to the hypotheses that any increase in excludability or appropriability of the returns to invention, attributable to the PVPA, would lead to increases in investment or efficiency gains in varieta...