Browsing by Subject "Inheritance"
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Item Genetic Analysis, Inheritance and Stability of Mutation-based Herbicide Tolerance in Cotton (Gossypium hirsutum L.)(2013-11-04) Cutts, George SherrodThe evolution of herbicide-resistant weed species in cotton production has created a need for new herbicide technology tools. Herbicide technologies not classified as genetically modified by recombinant DNA can provide tools with less associated registration and development costs and regulatory and market barriers. Research herein aims to advance herbicide crop tolerance through improvement and genetic analysis of mutation derived herbicide tolerance in cotton. Germplasm exhibiting elevated tolerance to the imidazolinone class of herbicides has been previously identified after mutagenesis with ethyl methanesulfonate (EMS). However, the physiological basis, genetic behavior, and potential for herbicide tolerance improvement are not fully understood and studies were designed to elucidate these factors. Three lines (EM4-3-1-1, EM4-3-1-2, and SCM3-4-3-1) show high levels of imazamox tolerance. Data indicate that yield for all EMS treated lines was equal to or greater than their respective non-EMS treated cultivar. EMS treatment had no adverse effects on other cotton fiber properties. In 2012, levels of imazamox herbicide injury were seen at 14 days after application (DAA) ranging from 25-34 per cent. A greater level of injury was observed in 2013 ranging from 30-37% 7 DAA, and from 60-68% 14 DAA. Injury was transient throughout both growing seasons. Acetolactate synthase (ALS) gene sequencing characterized a mutation at Ala122 that is classified as conferring tolerance to imidazolinone herbicides, but was inconsistent in lines evaluated. Sequencing also revealed lines that have a truncated form of the protein in this region that may inhibit imidazolinone binding to the ALS protein. Chi-square analysis indicated this trait behaves in a simple, dominant fashion. Data from parent-offspring regression analysis indicated moderate correlation between parents and F2 progeny (53%). Correlation is relatively high between F2 and F3 progeny (84%) and demonstrates a strong relationship between these generations. Gain from selection indicates a 13.6% improvement in herbicide tolerance, lending to low progress from selection. These studies have shown that non-transgenic breeding methods can confer and improve imidazolinone herbicide tolerance in cotton, though levels of imidazolinone herbicide injury remained commercially unacceptable.Item Inheritance, property and women in the Dāyabhāga(2016-05) Dutta, Manomohini; Davis, Donald R. (Donald Richard), 1970-; Olivelle, Patrick; Talbot, Cynthia; Freiberger, Oliver; Brereton, JoelThe largely accepted position on women in the Dharmaśāstras is that women are non-heirs—they are legally dependent on men in their respective roles as daughters, wives or mothers. While there exist studies on inheritance and property in Hindu Law, modern scholars have paid insufficient attention to women's rights to property in the Dharmaśāstras during the succession process, possibly due to Dharmaśāstric rhetoric on women. My study attempts to fill in this gap. In this dissertation, I examine the conceptual position of women in regard to inheritance and property in an influential treatise—the Dāyabhāga composed by Jīmūtavāhana. The Dāyabhāga is a specialized work on inheritance from medieval Bengal dated approximately to the 12th century CE. I analyze the Dāyabhāga closely as a historical text belonging to the Dharmaśāstric genre. I seek to explain three key legal concepts that Jīmūtavāhana reinterprets, arguing how his unique interpretations have a positive effect on women's rights to inheritance and property, at least in theory, within the Dāyabhāga. In chapter two, I investigate Jīmūtavāhana's understanding of the term dāya (inheritance) and show how Jīmūtavāhana's interpretation of dāya has the potential to liberate women from tight inheritance prescriptions in earlier Dharmaśāstras. In chapter three, I examine how Jīmūtavāhana approaches strīdhana (women's property) in terms of legal rights, which gives the power of alienation to women, and thus is reflective of women's "agency" in the Dāyabhāga. In chapter four, I discuss Jīmūtavāhana's concept of upakāra (spiritual benefit) to the deceased, where he extends upakāra beyond the śrāddhas (ancestral rites usually offered by male relatives) arguing that women too may provide upakāra, and uses it as a justification for women, especially widows, to legally claim their deceased husband's property. This study builds on and contributes to the paradigm of historical-textual studies on women. The chapters in this dissertation explore areas that have been relatively ignored in modern scholarship despite the huge popularity of Jīmūtavāhana's Dāyabhāga.