6 results about "Shade tolerance" patented technology

The present invention relates to a novel Korean velvet grass variety 'KVX' of the genus Zoysia, and a specific marker for identifying 'KVX', and more specifically, relates to 'KVX' (Accession No: KCTC16100BP), which is a novel Korean velvet grass variety having resistance to high temperature-high humidity stress, low-mowing and shade tolerance, longer green color retention, and ultra-fine leaves.

The present application relates to the technical field of corn breeding, in particular to a medium-high altitude corn shade-tolerant and disease-resistant nutrient variety breeding device and method, which comprises a material placing plate and a multispectral imaging module suspended above the material placing plate. The top surface of the material placing plate is provided with a plurality of material grooves in a dot matrix pattern for separately placing corn kernels. The multispectral imaging module is composed of a ring array of LED lamps, a visible light camera, a near-infrared sensor, and an ultraviolet excitation light source. The multispectral imaging module synchronously acquires RGB, NIR, and UV three-channel images of the kernels. Through the morphological analysis algorithm built in the image processing unit, the distribution coordinates of unqualified corn kernels are obtained. Then, the image processing unit activates the electromagnetic iron to make the connecting pipe, air hole, and air tube correspondingly communicate. At the same time, the air pump is started to supply air to each air tube, and then the identified corn kernels in the material grooves are blown out, thereby improving the accuracy and efficiency of screening shade-tolerant and disease-resistant nutrient variety kernels.

The application discloses a treatment method for improving shade tolerance of Nymphaea tetragona Georgi, and the treatment method is used for treating Nymphaea tetragona Georgi seedlings under 45% shade through an exogenous substance, and after 30 days of shade treatment, diluted GA3 and ALA are directly applied in water, the water capacity in the pot is kept at about 50 L, after 15 days of chemical substance treatment, morphological indexes and photosynthetic characteristic indexes of the Nymphaea tetragona Georgi are determined, fresh, complete and disease-free Nymphaea tetragona Georgi leaves are taken, and physiological and biochemical indexes of the Nymphaea tetragona Georgi leaves are measured. The application can improve the flowering amount and the leaf number of the Nymphaea tetragona Georgi under shade, and can improve the net photosynthetic rate of the Nymphaea tetragona Georgi leaves, so that the shade tolerance of the Nymphaea tetragona Georgi is improved. The application is simple in operation, convenient to use, and can be widely applied to Nymphaea tetragona Georgi planting in dark environments, and lays a foundation for realizing shade-tolerant Nymphaea tetragona Georgi pot flower production suitable for family horticulture.

This invention discloses a rapid identification method for soybean shade tolerance and its application, belonging to the field of plant breeding technology. The method includes: planting soybean materials under continuous shading at a shading rate of 30% ± 2%; measuring plant height, average internode length, stem diameter at the fifth internode, and petiole length of the largest leaf on the main stem in both the shaded and control groups at 50 ± 3 days after emergence; calculating PHS, ILS, STS, and PLS; calculating a comprehensive evaluation value using the D-value calculation formula; and classifying the materials into three shade tolerance levels—strong, medium, and weak—based on D values ​​≥ 0.65, 0.45 ≤ D value < 0.65, and D value < 0.45. This invention, by optimizing the measurement period and shading rate, combined with a multi-index comprehensive evaluation model, shortens the identification cycle to within 50 days, achieving a consistency rate of over 90% with actual field performance. It can be widely applied to soybean shade tolerance breeding, germplasm resource screening, and variety evaluation.

The application discloses a light system and method for indoor identification of shade tolerance of soybean germplasm resources, and the shade tolerance of soybean to low red light and far red light ratio and low blue light two kinds of shade signals is evaluated by using low red light and far red light ratio and low blue light two kinds of indoor shade light system construction technical parameters, so that a comprehensive shade tolerance evaluation value of soybean can be obtained, excellent shade tolerance germplasm genes are excavated, and beneficial germplasm resources are provided for breeding.