[The discovery and genetic analysis of dwarf mutation 99CDAM in Brassica napus L].

The plant height of rapeseed varieties has increased more than 20 cm due to wide application of heterosis, which leads to high risk of lodging at late stages of rapeseed development. Using dwarf genes to decrease plant height is an effective approach to resolve the lodging problem. A dwarf mutation 99CDAM with plant height of about 85 cm was discovered from a Brassica napus line which had selfed for many years. The mutation 99CDAM has good characters of early flowering and rich branches, as well as better yield and quality traits, which can be stably inherited, so 99CDAM has important value in Brassica napus breeding. Genetic analysis on reciprocal crosses between 99CDAM with high-stalk lines 2091, 7045 and 7350, and the F2BC1 and F2:3 populations derived from the cross between 2091 with 99CDAM indicated that the genetic model of dwarf genes in 99CDAM was obviously different from what had been reported before. The mutation 99CDAM was controlled by three pairs of recessive dwarf genes and showed a maternal effect..

Experimental investigation of the information entropic Bell inequality.

Inequalities of information entropic play a fundamental role in information theory and have been employed effectively in finding bounds on optimal rates of various information-processing tasks. In this paper, we perform the first experimental demonstration of the information-theoretic spin-1/2 inequality using the high-fidelity entangled state. Furthermore, we study the evolution of information difference of entropy when photons passing through different noisy channels and give the experimental rules of the information difference degradation. Our work provides an new essential tool for quantum information processing and measurement, and offers new insights into the dynamics of quantum correlation in open systems.

Extreme violation of local realism with a hyper-entangled four-photon-eight-qubit Greenberger-Horne-Zelinger state.

The highest qubit Ardehali inequality violation with 203 standard deviations is first experimentally demonstrated using the hyper-entangled four-photon-eight-qubit Greenberger-Horne-Zeilinger (GHZ) state. Moreover, we experimentally investigate the robustness of the Ardehali inequality for the four-, six-, and eight-qubit GHZ states in a rotary noisy environment systematically. Our results first validate the Ardehali' theoretical statement of relation between violation of Ardehali inequality and particle number, and proved that Ardehali inequality is more robust against noise in larger number qubit GHZ states, and provided an experimental benchmark for us to estimate the safety of quantum channel in the noisy environment.