Fruit Science (Pomology)

• is correct because genetic studies in citrus (Parlevliet & Cameron) and mango confirm that adventitious nucellar embryony (polyembryony) is controlled by a major dominant gene (single dominant allele, often designated as $P$).
• is incorrect because recessive inheritance would mean crosses between monoembryonic parents could yield polyembryonic progeny, which does not occur.
• is incorrect because the specific mode of expression is dominance.
• is incorrect because self-sterility governs pollination incompatibility, not nucellar polyembryony.

Historical literature on plant disease contagion:

• Vishvavallabh by Shri Chakrapani Mishra (c. $1577$ AD): Chakrapani Mishra, court scholar of Maharana Pratap of Mewar, authored 'Vishvavallabha', an elaborate treatise on Vrikshayurveda that documented the contagious nature of horticultural diseases and traditional plant protection formulations.
• Nusrat Dar Fanni-Falhat is a Persian manuscript on gardening and agriculture attributed to Dara Shikoh.
• Amarakosa is a classical Sanskrit thesaurus by Amarasimha compiling botanical and agricultural terms.
• Krishi Parashar is an ancient Sanskrit text on meteorology, tillage, and cattle care.
  
  Option breakdown:
• Vishvavallabh is the correct work mentioning disease contagion.
• Dara Shikoh's text focuses on Mughal garden techniques.
• Amarakosa is a thesaurus.
• Krishi Parashar focuses on agriculture and weather.