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"Planting"
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Leaf angle: a target of genetic improvement in cereal crops tailored for high‐density planting
Summary High‐density planting is an effective measure for increasing crop yield per unit land area. Leaf angle (LA) is a key trait of plant architecture and a target for genetic improvement of crops. Upright leaves allow better light capture in canopy under high‐density planting, thus enhancing photosynthesis efficiency, ventilation and stress resistance, and ultimately higher grain yield. Here, we summarized the latest progress on the cellular and molecular mechanisms regulating LA formation in rice and maize. We suggest several standing out questions for future studies and then propose some promising strategies to manipulate LA for breeding of cereal crops tailored for high‐density planting.
Journal Article
Rosario's fig tree
\"Every spring the little girl who lives next door to Rosario helps him plant vegetables. One spring, Rosario plants a fig tree, which soon bears sweet purple fruit. But when fall comes, he bends it over and buries it in the ground.\"--Publisher.
Book
Tree planting is not a simple solution
Tree planting must be carefully planned and implemented to achieve desired outcomes A plethora of articles suggest that tree planting can overcome a host of environmental problems, including climate change, water shortages, and the sixth mass extinction ( 1 – 3 ). Business leaders and politicians have jumped on the tree-planting bandwagon, and numerous nonprofit organizations and governments worldwide have started initiatives to plant billions or even trillions of trees for a host of social, ecological, and aesthetic reasons. Well-planned tree-planting projects are an important component of global efforts to improve ecological and human well-being. But tree planting becomes problematic when it is promoted as a simple, silver bullet solution and overshadows other actions that have greater potential for addressing the drivers of specific environmental problems, such as taking bold and rapid steps to reduce deforestation and greenhouse gas emissions.
Journal Article
Cool flowers : how to grow and enjoy long-blooming hardy annual flowers using cool weather techniques
\"In Cool Flowers, cut-flower farmer Lisa Ziegler presents simple, tried-and-true techniques for today's gardener and profiles 30 of her favorite hardy annual flowers. Your reward? A cutting garden that keeps on blooming when the \"tender annuals\" are dead and gone.\"-- Provided by publisher.
Book
Teosinte ligule allele narrows plant architecture and enhances high-density maize yields
Increased planting densities have boosted maize yields. Upright plant architecture facilitates dense planting. Here, we cloned UPA1 (Upright Plant Architecture1) and UPA2, two quantitative trait loci conferring upright plant architecture. UPA2 is controlled by a two-base sequence polymorphism regulating the expression of a B3-domain transcription factor (ZmRAVL1) located 9.5 kilobases downstream. UPA2 exhibits differential binding by DRL1 (DROOPING LEAF1), and DRL1 physically interacts with LG1 (LIGULELESS1) and represses LG1 activation of ZmRAVL1. ZmRAVL1 regulates brd1 (brassinosteroid C-6 oxidase1), which underlies UPA1, altering endogenous brassinosteroid content and leaf angle.The UPA2 allele that reduces leaf angle originated from teosinte, the wild ancestor of maize, and has been lost during maize domestication. Introgressing the wild UPA2 allele into modern hybrids and editing ZmRAVL1 enhance high-density maize yields.
Journal Article