This invention describes a new method of grain production in corn wherein a designated female corn plant is pollinated with designated male corn plant pollen from an unrelated genetic background. In the method, a designated female plant having both female and male components is grown. Intentional pollination may occur on one more days, is intentional, and occurs at a time when male components are not male sterile and are not shedding pollen. Accordingly, the process involves the intentional delivery of unrelated designated male plant pollen at will, as available either in a preserved pollen bank or real-time collection from male plants as they become available, in a growth chamber for example. The delivered designated male plant pollen is in such amounts and fortuitously timed that it preferentially cross-pollinates the designated female plant.

This invention describes a new method to increase grain yields in any crop plant by modifying pollination to effect an increase in grain yield, a change in grain content or characteristics, a decrease in contamination, or a combination of these attributes. The process involves the intentional delivery of pollen of the male plant at will via automatic or semi-automatic means, as available either in a preserved pollen bank, or real-time collection from male plants as they become available, in a growth chamber for example. Desired pollen is delivered to fertile females. The delivered pollen.sup.M is in such amounts and fortuitously timed that it preferentially pollinates the females and avoids self-pollination or pollination from neighboring plants. The intentional delivery of genetically different pollen will result in increased heterosis and accompanying grain yield increases resulting from increased grain size and the potential to influence grain content and constituents. The invention also permits real-time agronomic decision making in order to maximize grain yield by overcoming biotic and abiotic challenges in the growing season which may or may not have been anticipated.

Rice is described that is tolerant/resistant to herbicides, for example, ACCase inhibitors, and HPPD inhibitors, or both. For ACCase inhibitors, 2 different chromosome regions act synergistically in providing resistance/tolerance to the same herbicide class. Use of the herbicide resistant/tolerant rice for weed control and methods of producing tolerant/resistant rice are also disclosed.

The present invention discloses rice serine hydroxymethyltransferase coded gene OsSHM4 mutants and application thereof. The rice serine hydroxymethyltransferase coded gene mutants are obtained in a manner that T at a 461st position of a CDS sequence region of a wild type rice OsSHM4 gene is mutated to C, so that coded amino acids thereof are mutated from leucine to proline. A CDS sequence of the wild type rice OsSHM4 gene is shown in SEQ ID NO. 1. After mutation of serine hydroxymethyltransferase coded genes OsSHM4, under a field experiment condition, S and Se content of rice shoots is remarkably improved without influencing biomass of rice. After wild type serine hydroxymethyltransferase coded genes OsSHM4 are genetically modified to complement the mutants, S and Se content of shoots of complemented strains is restored to that of wild type rice water planting.

The present disclosure provides a method for treating rice. The method comprises the steps of: providing a domestic rice crop plant and at least one ACCase-inhibiting aryloxyphenoxypropanoate herbicide selected from the group consisting of quizalofop or an ester thereof, haloxyfop, fluazifop or an ester thereof, clodinafop, clodinafop-propargyl, diclofop, and diclofop-methyl; applying an effective amount (measured in g AI/Ha) of the at least one aryloxyphenoxypropanoate herbicide to the domestic rice crop plant, post-emergence; thereby creating a treated rice plant; and growing the resulting treated rice plant.

The present disclosure provides a method for treating rice. The method comprises the steps of: providing a domestic rice crop plant and at least one ACCase-inhibiting aryloxyphenoxypropanoate herbicide selected from the group consisting of quizalofop or an ester thereof, haloxyfop, fluazifop or an ester thereof, clodinafop, clodinafop-propargyl, diclofop, and diclofop-methyl; applying an effective amount (measured in g AI/Ha) of the at least one aryloxyphenoxypropanoate herbicide to the domestic rice crop plant, post-emergence; thereby creating a treated rice plant; and growing the resulting treated rice plant.

Provided are the herbicide-tolerant, aromatic (jasmine) rice cultivar designated ‘CLJ01’ and its hybrids and derivatives. The present invention provides a method for controlling weeds in the vicinity of rice, comprising contacting the rice with an herbicide, wherein said rice belongs to any of (a) variety ‘CLJ01’ or (b) a hybrid, derivative, or progeny of ‘CLJOV that expresses the imidazolinone herbicide resistance characteristics of ‘CLJOV. In some embodiments, the rice plants of the present invention include plants that comprise an AHAS mutant polypeptide that confers an increased tolerance to an imidazolinone herbicide when compared to a wild-type rice plant.

A breeding method of a polyploid rice two-line restorer line includes determining hybrid parents for breeding the restorer line; breeding a restorer line of an indica sterile/japonica restorer type, or breeding a restorer line of a japonica sterile/indica restorer type, and carrying out backcrossing or composite hybridization after hybridization of the parents; selecting a single plant that meets the breeding goal, carrying out composite hybridization again and carrying out preliminary molecular marker detection; comparing, and selecting a single plant with good traits for continuous selfing until the line is basically stable; selecting a stable line with good traits and detection molecular markers; carrying out test-crossing on the preferred line as a male parent with different types of polyploid sterile lines; and selecting a good hybrid combination and a restorer line thereof.

The semi-dwarf, mid-season, medium grain rice variety MM17 is disclosed. The invention relates to the seeds and plants of the semi-dwarf, mid-season, medium grain rice variety MM17. The invention also relates to methods for producing a rice plant produced by crossing the semi-dwarf, mid-season, medium grain rice variety MM17 with itself or another variety.

The present disclosure provides a method for treating rice. The method comprises the steps of: providing a domestic rice crop plant and at least one ACCase-inhibiting aryloxyphenoxypropanoate herbicide selected from the group consisting of quizalofop or an ester thereof, haloxyfop, fluazifop or an ester thereof, clodinafop, clodinafop-propargyl, diclofop, and diclofop-methyl; applying an effective amount (measured in g AI/Ha) of the at least one aryloxyphenoxypropanoate herbicide to the domestic rice crop plant, post-emergence; thereby creating a treated rice plant; and growing the resulting treated rice plant.